<SEC-DOCUMENT>0001437749-15-001662.txt : 20150203
<SEC-HEADER>0001437749-15-001662.hdr.sgml : 20150203
<ACCEPTANCE-DATETIME>20150203114906
ACCESSION NUMBER:		0001437749-15-001662
CONFORMED SUBMISSION TYPE:	10-Q/A
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20140930
FILED AS OF DATE:		20150203
DATE AS OF CHANGE:		20150203

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MESA LABORATORIES INC /CO
		CENTRAL INDEX KEY:			0000724004
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				840872291
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		10-Q/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11740
		FILM NUMBER:		15569672

	BUSINESS ADDRESS:	
		STREET 1:		12100 W 6TH AVE
		CITY:			LAKEWOOD
		STATE:			CO
		ZIP:			80228
		BUSINESS PHONE:		3039878000

	MAIL ADDRESS:	
		STREET 1:		12100 W 6TH AVE
		CITY:			LAKEWOOD
		STATE:			CO
		ZIP:			80228

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MESA MEDICAL INC
		DATE OF NAME CHANGE:	19921123
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q/A
<SEQUENCE>1
<FILENAME>mesa20150202_10qa.htm
<DESCRIPTION>FORM 10-Q/A
<TEXT>
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<P id=PARA2 style="MARGIN-BOTTOM: 0px; TEXT-ALIGN: center; MARGIN-TOP: 0px; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B></B></FONT>&nbsp;</P>
<P style="MARGIN-BOTTOM: 0px; TEXT-ALIGN: center; MARGIN-TOP: 0px; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>UNITED STATES</B></FONT></P>
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<P id=PARA4 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Washington, D.C.</B><B> </B><B>20549</B></FONT><STRONG></STRONG></P>
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<P id=PARA5 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B><FONT style="FONT-SIZE: 10pt; FONT-STYLE: normal; BACKGROUND-COLOR: yellow"></FONT></B></FONT><FONT style="FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>F</B><B>ORM</B><B> 10-Q</B><B>/A</B></FONT></P>
<P id=PARA7 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>(</B><B>AMENDMENT NO. 1</B><B>)</B></FONT></P>
<P id=PARA8 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>(Mark one)</B></FONT></P>
<P id=PARA9 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA10 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 63pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&#9746;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>QUARTERLY REPORT </B><B>PURSUANT TO </B><B>SECTION 13 OR 15(d) OF THE SECURITES EXCHANGE ACT OF 1934 </B></FONT></P>
<P id=PARA11 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>For the </B><B>quarterly period</B><B> ended </B><B>September 30, 2014</B></FONT></P>
<P id=PARA12 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA13 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 63pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&#9744;<B>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TRANSITION REPORT </B><B>PURSUANT TO</B><B>SECTION 13 OR 15 (d) OF THE SECURITES EXCHANGE ACT OF 1934</B></FONT></P>
<P id=PARA14 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA15 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>For the transition period from ___ to ___</B></FONT></P>
<P id=PARA16 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA17 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Commission File No: 0-11740</B></FONT></P>
<P id=PARA18 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B><FONT style="FONT-SIZE: 10pt; FONT-STYLE: normal; BACKGROUND-COLOR: yellow"></FONT></B></FONT></P>
<HR style="BORDER-TOP: medium none; HEIGHT: 1px; BORDER-RIGHT: medium none; WIDTH: 20%; BORDER-BOTTOM: medium none; COLOR: #000000;  BORDER-LEFT: medium none; BACKGROUND-COLOR: #000000" align="center">

<P id=PARA20 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA21 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman, Times, serif"><B>MESA LABORATORIES, INC.</B></FONT></P>
<P id=PARA22 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Exact name of registrant as specified in its charter)</FONT></P>
<TABLE id=TBL34  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 64.4%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 align=center border=0>

<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: bottom">
<P id=PARA23 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Colorado</B></FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">
<P id=PARA24 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>84-0872291</B></FONT></P></TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: top">
<P id=PARA25 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(State or other jurisdiction of</FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">
<P id=PARA26 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(I.R.S. Employer</FONT></P></TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: top">
<P id=PARA27 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">incorporation or organization)</FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">
<P id=PARA28 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Identification number)</FONT></P></TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">&nbsp; </TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: bottom">
<P id=PARA29 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>12100 West Sixth Avenue</B></FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">&nbsp; </TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: top">
<P id=PARA30 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Lakewood, Colorado</B></FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">
<P id=PARA31 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>80228</B></FONT></P></TD></TR>
<TR>
<TD style="WIDTH: 48.2%; VERTICAL-ALIGN: top">
<P id=PARA32 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Address of principal executive offices)</FONT></P></TD>
<TD style="WIDTH: 5.2%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 48.1%; VERTICAL-ALIGN: bottom">
<P id=PARA33 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Zip Code)</FONT></P></TD></TR></TABLE>
<P id=PARA35 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA36 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Registrant&#8217;s telephone number, including area code: <B>(303) 987-8000</B></FONT></P>
<P id=PARA37 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 36pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA38 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934, during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. </FONT></P>
<P id=PARA39 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Yes &#9746;&nbsp;&nbsp;&nbsp;No &#9744;</FONT></P>
<P id=PARA40 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA41 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes &#9746;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No &#9744;</FONT></P>
<P id=PARA42 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA43 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of &#8220;large accelerated filer,&#8221; &#8220;accelerated filer&#8221; and &#8220;smaller reporting company&#8221; in Rule 12b-2 of the Exchange Act. (Check one):</FONT></P>
<P id=PARA44 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=TBL54  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 99%; MARGIN-LEFT: 0%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 24.6%; VERTICAL-ALIGN: top">
<P id=PARA45 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA46 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Large accelerated filer &#9744;</FONT></P></TD>
<TD style="WIDTH: 20.4%; VERTICAL-ALIGN: top">
<P id=PARA47 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA48 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Accelerated filer&#9746;</FONT></P></TD>
<TD style="WIDTH: 29.1%; VERTICAL-ALIGN: top">
<P id=PARA49 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA50 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Non-accelerated filer &#9744;</FONT></P></TD>
<TD style="WIDTH: 26.9%; VERTICAL-ALIGN: top">
<P id=PARA51 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA52 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Smaller reporting company &#9744;</FONT></P></TD></TR>
<TR>
<TD style="WIDTH: 24.6%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 20.4%; VERTICAL-ALIGN: top">&nbsp; </TD>
<TD style="WIDTH: 29.1%; VERTICAL-ALIGN: bottom">
<P id=PARA53 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Do not check if a smaller reporting company)</FONT></P></TD>
<TD style="WIDTH: 26.9%; VERTICAL-ALIGN: bottom">&nbsp; </TD></TR></TABLE>
<P id=PARA55 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA56 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). </FONT></P>
<P id=PARA57 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Yes &#9744;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No &#9746;</FONT></P>
<P id=PARA58 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA59 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Indicate the number of shares outstanding of each of the Issuer&#8217;s classes of common stock, as of the latest practicable date:</FONT></P>
<P id=PARA60 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA61 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">There were 3,530,938 shares of the Issuer&#8217;s common stock, no par value, outstanding as of October 28, 2014<B>.</B></FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
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<HR style="MARGIN-BOTTOM: 0px; BORDER-TOP: medium none; HEIGHT: 3px; BORDER-RIGHT: medium none; WIDTH: 100%; BORDER-BOTTOM: medium none; POSITION: relative; COLOR: #000000; BORDER-LEFT: medium none; MARGIN-TOP: 0px; TOP: 0px; BACKGROUND-COLOR: #000000">

<P id=PARA62.1 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT></P>
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<DIV id=PGNUM62  style="FONT-SIZE: 10pt; WIDTH: 100%; TEXT-ALIGN: center">Page 1</DIV>
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<DIV id=PGHDR62  style="WIDTH: 100%; TEXT-ALIGN: left">&nbsp;</DIV></DIV>
<P id=PARA62.2 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA64 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>EXPLANATORY NOTE</B></FONT></P>
<P id=PARA65 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P id=PARA66 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Mesa Laboratories, Inc. is filing this Amendment No. 1 (the &#8220;Form 10-Q/A&#8221;) to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2014 (the &#8220;Form 10-Q&#8221;), filed with the Securities and Exchange Commission (&#8220;SEC&#8221;) on November 6, 2014, for the sole purpose of correcting an error in the first paragraph of &#8220;Item 4. Controls and Procedures&#8221; of the Form 10-Q. Specifically, in the last two sentences of that paragraph, &#8220;June 30, 2014&#8221; should have been &#8220;September 30, 2014,&#8221; so that the sentences, as corrected, read: &#8220;Our management evaluated, with the participation of our Chief Executive Officer and Chief Financial Officer, the effectiveness of our disclosure controls and procedures as of September 30, 2014. Based on that evaluation, our management concluded that our disclosure controls and procedures were effective at September 30, 2014.&#8221;</FONT></P>
<P id=PARA67 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA68 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">No other changes have been made to the Form 10-Q. This Form 10-Q/A continues to speak as of the original filing date of the Form 10-Q, does not reflect events that may have occurred subsequent to the original filing date and does not modify or update any related disclosures made in the Form 10-Q.</FONT></P>
<P id=PARA69 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA70 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Item 4. </B><I><B>Controls and Procedures</B></I></FONT></P>
<P id=PARA71 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA72 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Evaluation of Disclosure Controls and Procedures</B></FONT></P>
<P id=PARA73 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA74 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">We maintain disclosure controls and procedures (as defined in Rules&nbsp;13a-15(e)&nbsp;and 15d-15(e)&nbsp;under the Securities Exchange Act of 1934, as amended) that are designed to reasonably ensure that information required to be disclosed by us in the reports we file or submit under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission&#8217;s rules&nbsp;and forms and that such information is accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Our management evaluated, with the participation of our Chief Executive Officer and Chief Financial Officer, the effectiveness of our disclosure controls and procedures as of September 30, 2014. Based on that evaluation, our management concluded that our disclosure controls and procedures were effective at September 30, 2014.</FONT></P>
<P id=PARA75 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA76 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Our management, including our Chief Executive Officer and Chief Financial Officer, is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with generally accepted accounting principles in the United States. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Therefore, even those systems determined to be effective can provide only reasonable assurance of achieving their control objectives. Management evaluated the effectiveness of our internal control over financial reporting based on the framework in &#8220;Internal Control &#8211; Integrated Framework&#8221; issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in 1992.</FONT></P>
<P id=PARA77 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA78 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Our management evaluated, with the participation of our Chief Executive Officer and Chief Financial Officer, the effectiveness of our internal control over financial reporting as of September 30, 2014. Based on that evaluation, our management concluded that our internal control over financial reporting was effective at September 30, 2014. As allowed, this evaluation excludes the operations of acquired entities during the six months ended September 30, 2014 due to the timing of the acquisitions. Revenues related to these acquisitions were 10% of total revenues for the six months ended September 30, 2014.</FONT></P>
<P id=PARA79 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA80 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Changes in Internal Control Over Financial Reporting </B></FONT></P>
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<P id=PARA82 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">There were no significant changes in our internal control over financial reporting that occurred during the six months ended September 30, 2014, that have materially affected, or are reasonably likely to materially affect our internal control over financial reporting.</FONT></P>
<P id=PARA83 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA84 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Item 6. </B><I><B>Exhibits</B></I></FONT></P>
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<P id=PARA86 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<P id=PARA87 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">31.1</FONT></P></TD>
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<P id=PARA88 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002</FONT></P></TD></TR>
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<P id=PARA89 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">31.2</FONT></P></TD>
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<P id=PARA90 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002</FONT></P></TD></TR>
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<P id=PARA91 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">32.1</FONT></P></TD>
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<P id=PARA92 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 </FONT></P></TD></TR>
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<P id=PARA93 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">32.2</FONT></P></TD>
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<P id=PARA94 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 </FONT></P></TD></TR></TABLE>
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<P id=PARA106 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.</FONT></P>
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<P id=PARA304 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U>MESA LABORATORIES, INC.</U>&nbsp;</P></TD>
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<P id=PARA307 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px">(Registrant)&nbsp;</P></TD>
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<P id=PARA319 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">DATED: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;</P></TD>
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<P id=PARA320 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">BY:&nbsp;</P></TD>
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<P id=PARA321 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U>/s/ John J. Sullivan, Ph.D.</U>&nbsp;</P></TD></TR>
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<P id=PARA322 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
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<P id=PARA324 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John J. Sullivan, Ph.D.&nbsp;</P></TD></TR>
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<P id=PARA327 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Executive Officer&nbsp;</P></TD></TR>
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<P id=PARA337 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">DATED: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;</P></TD>
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<P id=PARA338 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">BY:&nbsp;</P></TD>
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<P id=PARA339 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U></P>
<P id=PARA122 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><U><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">/s/ John V. Sakys</U></FONT></U>&nbsp;</P></TD></TR>
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<P id=PARA342 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John V. Sakys&nbsp;</P></TD></TR>
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<P id=PARA345 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Financial Officer</P></TD></TR></TABLE>
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<DOCUMENT>
<TYPE>EX-31
<SEQUENCE>2
<FILENAME>ex31-1.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
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<P id=PARA128 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>Exhibit 31.1 Certifications Pursuant to Rule 13</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>-14(</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>)</B></FONT></FONT></FONT></P>
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<P id=PARA130 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">I, John J. Sullivan, Ph.D., certify that:</FONT></P>
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<P id=PARA134 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">1.</FONT></P></TD>
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<P id=PARA135 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">I have reviewed this quarterly report on Form 10-Q of Mesa Laboratories, Inc.; </FONT></P></TD></TR></TABLE>
<P id=PARA136 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<P id=PARA139 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">2.</FONT></P></TD>
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<P id=PARA140 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; </FONT></P></TD></TR></TABLE>
<P id=PARA141 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<P id=PARA144 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">3.</FONT></P></TD>
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<P id=PARA145 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; </FONT></P></TD></TR></TABLE>
<P id=PARA146 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<P id=PARA149 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">4.</FONT></P></TD>
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<P id=PARA150 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The registrant&#8217;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: </FONT></P></TD></TR></TABLE>
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<P id=PARA154 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(a)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA155 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</FONT></P></TD></TR></TABLE>
<P id=PARA156 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA159 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(b)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA160 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</FONT></P></TD></TR></TABLE>
<P id=PARA161 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA164 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(c)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA165 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</FONT></P></TD></TR></TABLE>
<P id=PARA166 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA169 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(d)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA170 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Disclosed in this report any change in the registrant&#8217;s internal control over financial reporting that occurred during the registrant&#8217;s most recent fiscal quarter (the registrant&#8217;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#8217;s internal control over financial reporting; and</FONT></P></TD></TR></TABLE>
<P id=PARA171 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB173  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA174 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">5.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA175 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The registrant&#8217;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of the registrant&#8217;s board of directors (or persons performing the equivalent functions): </FONT></P></TD></TR></TABLE>
<P id=PARA176 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA179 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(a)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA180 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize and report financial information; and </FONT></P></TD></TR></TABLE>
<P id=PARA181 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA184 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(b)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA185 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting. </FONT></P></TD></TR></TABLE>
<P id=PARA186 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA187 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA188 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 30%">
<P id=PARA1 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Date: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA2 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U>/s/ John J. Sullivan, Ph.D.</U>&nbsp;</P></TD></TR>
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<P id=PARA3 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
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<P id=PARA4 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John J. Sullivan, Ph.D.&nbsp;</P></TD></TR>
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<TD style="WIDTH: 30%">
<P id=PARA5 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA6 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Executive Officer&nbsp;</P></TD></TR></TABLE>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31
<SEQUENCE>3
<FILENAME>ex31-2.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
<HTML><HEAD><TITLE>mesa20150202_10qa.htm</TITLE>
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<P id=PARA193 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>Exhibit 31.2 Certifications Pursuant to Rule 13</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>-14(</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>)</B></FONT></FONT></FONT></P>
<P id=PARA194 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA195 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">I, John V. Sakys, certify that:</FONT></P>
<P id=PARA196 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA199 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">1.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA200 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">I have reviewed this quarterly report on Form 10-Q of Mesa Laboratories, Inc.; </FONT></P></TD></TR></TABLE>
<P id=PARA201 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA204 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">2.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA205 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; </FONT></P></TD></TR></TABLE>
<P id=PARA206 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA209 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">3.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA210 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report; </FONT></P></TD></TR></TABLE>
<P id=PARA211 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 36pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA214 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">4.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA215 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The registrant&#8217;s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: </FONT></P></TD></TR></TABLE>
<P id=PARA216 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB218  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA219 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(a)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA220 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</FONT></P></TD></TR></TABLE>
<P id=PARA221 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA224 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(b)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA225 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</FONT></P></TD></TR></TABLE>
<P id=PARA226 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA229 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(c)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA230 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</FONT></P></TD></TR></TABLE>
<P id=PARA231 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA234 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(d)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA235 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Disclosed in this report any change in the registrant&#8217;s internal control over financial reporting that occurred during the registrant&#8217;s most recent fiscal quarter (the registrant&#8217;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#8217;s internal control over financial reporting; and</FONT></P></TD></TR></TABLE>
<P id=PARA236 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA239 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">5.</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA240 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The registrant&#8217;s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of the registrant&#8217;s board of directors (or persons performing the equivalent functions): </FONT></P></TD></TR></TABLE>
<P id=PARA241 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
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<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA244 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(a)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA245 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize and report financial information; and </FONT></P></TD></TR></TABLE>
<P id=PARA246 style="TEXT-ALIGN: left; MARGIN: 0pt 0pt 0pt 72pt; LINE-HEIGHT: 1.25; TEXT-INDENT: -18pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB248  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 54pt">&nbsp;</TD>
<TD style="WIDTH: 18pt; VERTICAL-ALIGN: top">
<P id=PARA249 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(b)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA250 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting. </FONT></P></TD></TR></TABLE>
<P id=PARA251 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA252 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"></FONT>&nbsp;</P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
<TABLE  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0>

<TR>
<TD style="WIDTH: 30%">
<P id=PARA1 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Date: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA2 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U>/s/ John V. Sakys</U>&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA3 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA4 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John V. Sakys&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA5 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA6 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Financial Officer&nbsp;</P></TD></TR></TABLE>
<P id=PARA255 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"></FONT></P></BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>4
<FILENAME>ex32-1.htm
<DESCRIPTION>EXHIBIT 32.1
<TEXT>
<HTML><HEAD><TITLE>mesa20150202_10qa.htm</TITLE>
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</HEAD>
<BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; MARGIN-LEFT: 10px; MARGIN-RIGHT: 10px"></FONT>
<P id=PARA7 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"></P>
<P id=PARA260 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>Exhibit 32.1 Certifications Pursuant to Rule 13</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>-14(</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>b</B><FONT style="FONT-VARIANT: small-caps"><B>) and 18 U.S.C Section 1350</B></FONT></FONT></FONT></P>
<P id=PARA261 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA262 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">In connection with the Quarterly Report of Mesa Laboratories, Inc. (the &#8220;Company&#8221;) on Form 10-Q for the fiscal quarter ended September 30, 2014, as filed with the Securities and Exchange Commission on the date hereof (the &#8220;Report&#8221;), I, John J. Sullivan, Ph.D., Chief Executive Officer of the Company, certify, pursuant to Rule 13a-14(b) and 18 U.S.C. &#167; 1350, that:</FONT></P>
<P id=PARA263 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB265  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 36pt; VERTICAL-ALIGN: top">
<P id=PARA266 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(1)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA267 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and</FONT></P></TD></TR></TABLE>
<P id=PARA268 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB270  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 36pt; VERTICAL-ALIGN: top">
<P id=PARA271 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(2)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA272 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.</FONT></P></TD></TR></TABLE>
<P id=PARA273 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
<TABLE  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0>

<TR>
<TD style="WIDTH: 30%">
<P id=PARA1 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Date: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA2 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U></P>
<P id=PARA275 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><U><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">/s/ John J. Sullivan, Ph.D.</U></FONT></U>&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA3 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA4 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John J. Sullivan, Ph.D.&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA5 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA6 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Executive Officer&nbsp;</P></TD></TR></TABLE>
<P id=PARA274 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"></FONT></P></BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>5
<FILENAME>ex32-2.htm
<DESCRIPTION>EXHIBIT 32.2
<TEXT>
<HTML><HEAD><TITLE>mesa20150202_10qa.htm</TITLE>
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</HEAD>
<BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; MARGIN-LEFT: 10px; MARGIN-RIGHT: 10px"></FONT>
<P id=PARA7 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"></P>
<P id=PARA282 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; FONT-VARIANT: small-caps"><B>Exhibit 32.2 Certifications Pursuant to Rule 13</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>a</B><FONT style="FONT-VARIANT: small-caps"><B>-14(</B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>b</B><FONT style="FONT-VARIANT: small-caps"><B>) and 18 U.S.C Section 1350</B></FONT></FONT></FONT></P>
<P id=PARA284 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA285 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">In connection with the Quarterly Report of Mesa Laboratories, Inc. (the &#8220;Company&#8221;) on Form 10-Q for the fiscal quarter ended September 30, 2014, as filed with the Securities and Exchange Commission on the date hereof (the &#8220;Report&#8221;), I, John V. Sakys, Chief Financial Officer of the Company, certify, pursuant to Rule 13a-14(b) and 18 U.S.C. &#167; 1350, that:</FONT></P>
<P id=PARA286 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB288  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 36pt; VERTICAL-ALIGN: top">
<P id=PARA289 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(1)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA290 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and</FONT></P></TD></TR></TABLE>
<P id=PARA291 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE id=MTAB293  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0 border=0>

<TR>
<TD style="WIDTH: 18pt">&nbsp;</TD>
<TD style="WIDTH: 36pt; VERTICAL-ALIGN: top">
<P id=PARA294 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(2)</FONT></P></TD>
<TD style="VERTICAL-ALIGN: top">
<P id=PARA295 style="MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left; MARGIN-TOP: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.</FONT></P></TD></TR></TABLE>
<P id=PARA296 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA297 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<TABLE  style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif; WIDTH: 100%; TEXT-INDENT: 0px" cellSpacing=0 cellPadding=0>

<TR>
<TD style="WIDTH: 30%">
<P id=PARA1 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Date: <U>February 3</U><U>, 201</U><U>5</U>&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA2 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><U></P>
<P id=PARA298 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><U><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">/s/ John V. Sakys</U></FONT></U>&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA3 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA4 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">John V. Sakys&nbsp;</P></TD></TR>
<TR>
<TD style="WIDTH: 30%">
<P id=PARA5 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">&nbsp;</P></TD>
<TD style="WIDTH: 70%">
<P id=PARA6 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt">Chief Financial Officer&nbsp;</P></TD></TR></TABLE>
<P id=PARA303 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P></BODY></HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
