<SEC-DOCUMENT>0001104659-12-059598.txt : 20121018
<SEC-HEADER>0001104659-12-059598.hdr.sgml : 20121018
<ACCEPTANCE-DATETIME>20120822163521
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-12-059598
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20120822

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:		CORRESP

	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>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>


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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="right" style="margin:0in .75in .0001pt 0in;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">By Edgar</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">August&nbsp;22, 2012</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">United States Securities and Exchange Commission</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">100 F Street, N.E.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C. 20549</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Re:</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Response to Comments on Mesa Laboratories,&nbsp;Inc.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Form&nbsp;10-K for the fiscal year ended March&nbsp;31, 2012</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Filed June&nbsp;29, 2012</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">File No.&nbsp;000-11740</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Form&nbsp;8-K/A Filed July&nbsp;27, 2012</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Gentlemen and Ladies:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We have reviewed your comments dated August&nbsp;9, 2012 regarding our Form&nbsp;10-K filing referenced above, and provide the following responses.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Form&nbsp;10-K for the fiscal year ended March&nbsp;31, 2012</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">General</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">You have asked us to provide you with our calculation of our public float held by non-affiliates as of September&nbsp;30, 2011.&#160; Item 10(f)(1)&nbsp;of Regulation S-K indicates that public float is calculated by multiplying the aggregate worldwide number of shares of its voting and non-voting common equity held by non-affiliates by the price at which the common equity was last sold, or the average of the bid and asked prices of common equity, in the principal market for the common equity.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rule&nbsp;144 defines an &#147;affiliate&#148; as a person, such as a director or large shareholder, in a relationship of control with the issuer; and defines &#147;Control&#148; to mean the power to direct the management and policies of the company in question, whether through the ownership of voting securities, by contract, or otherwise.&#160; Section&nbsp;240.10b-18(a)(3)&nbsp;defines &#147;affiliate&#148; as any person that directly or indirectly controls, or is controlled by, or is under common control with, the issuer.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
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<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We have only one class of stock outstanding &#151; voting common stock.&#160; We have used a consistent methodology since 1996.&#160; In our calculation of public float, we begin with total shares outstanding, then subtract affiliate shares.&#160; We identify affiliates as executive officers, members of our board of directors, and large shareholders (those shareholders holding greater than or equal to 5% of total shares outstanding).&#160; We have two shareholders who each own more than 5% of our total shares outstanding and we consult with them regarding matters to be put to a shareholder vote prior to issuing our proxy statements.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We used the price at which our common stock closed on September&nbsp;30, 2011, the last day of trading for our second fiscal quarter ended September&nbsp;30, 2011.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following summarizes our calculation at September&nbsp;30, 2011:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<table border="0" cellspacing="0" cellpadding="0" width="73%" style="border-collapse:collapse;margin-left:.25in;width:73.32%;">
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Total shares outstanding</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3,282,470</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" style="padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Less:</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" style="border:none;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shares held by executive officers</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">63,742</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" style="padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shares held by our Board of Directors</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" style="padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">658,948</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Shares held by large shareholders</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" style="padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 30.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Royce&nbsp;&amp; Associates (13.2%)</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" style="padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">431,872</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 30.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Fidelity Investments (9.7%)</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">317,500</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" style="padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Total affiliate shares</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1,472,062</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Non-affiliate shares outstanding</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="16%" colspan="2" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in 0in 0in 0in;width:16.38%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1,810,408</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" style="padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Stock price at September&nbsp;30, 2011</font></p>    </td>
<td width="3%" valign="bottom" style="padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="1%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:1.56%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>    </td>
<td width="14%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:14.82%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">35.342</font></p>    </td>
<td width="1%" valign="bottom" style="padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="78%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:78.86%;">
<p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Aggregate market value held by non-affiliates at   September&nbsp;30, 2011</font></p>    </td>
<td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:3.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.56%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>    </td>
<td width="14%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:14.82%;">
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">63,983,440</font></p>    </td>
<td width="1%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in 0in 0in 0in;width:1.38%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 9A. Controls and Procedures, page&nbsp;37</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">You indicated that it does not appear as though management provided a conclusion regarding the effectiveness of our disclosure controls and procedures, as discussed in Item 307 of Regulation S-K, which requires disclosing the conclusions of the registrant&#146;s principal executive and principal financial officers, or persons performing similar functions, regarding the effectiveness of the registrant&#146;s disclosure controls and procedures as of the end of the period covered by the report, based on the evaluation of these controls and procedures.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We have filed simultaneously Amendment No.&nbsp;1 to our Form&nbsp;10-K/A for the fiscal year ended March&nbsp;31, 2012 to amend our disclosure in Item 9A thereof to disclose, pursuant to the SEC Comment Letter dated August&nbsp;9, 2012, conclusions regarding the effectiveness of our disclosure controls and procedures as well as our internal control over financial reporting.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Form&nbsp;8-K/A filed July&nbsp;27, 2012</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Exhibit&nbsp;99.3</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">You noted that we provided pro forma balance sheets as of March&nbsp;31, 2012 and March&nbsp;31, 2011, as well as pro forma income statements for the years ended March&nbsp;31, 2012 and March&nbsp;31, 2011.&#160; You have asked us to explain how we considered the guidance in Rule&nbsp;8-05(b)&nbsp;of Regulation S-X, which indicates that we were only required to file a March&nbsp;31, 2012 pro forma balance sheet and a pro forma income statement for our fiscal year ended March&nbsp;31, 2012.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rule&nbsp;8-05(b)&nbsp;of Regulation S-X does not require the presentation of multiple years.&#160; Our inclusion of our March&nbsp;31, 2011 financial information was simply an oversight on our part.&#160; In the future, we will present only the pro forma statements required by Rule&nbsp;8-05(b)&nbsp;of Regulation S-X.</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Acknowledgement</font></u></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">My signature below on this letter serves as an acknowledgement by the Company of the following:</font></p>
<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .5in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">The Company is responsible for the adequacy and accuracy of the disclosure in this filing;</font></p>
<p style="margin:0in 0in .0001pt .5in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Staff comments or changes to disclosure in response to staff comments do not foreclose the Commission from taking any action with respect to the filing; and</font></p>
<p style="margin:0in 0in .0001pt .5in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">The Company may not assert staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the United States.</font></p>
<p style="margin:0in 0in .0001pt .5in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We trust that our responses respond to your questions set forth in your August&nbsp;9, 2012 Comment Letter.&#160; If you have any further questions or comments or need any additional information, please contact me at my office.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Best regards,</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Steven   W. Peterson</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven   W. Peterson</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice   President of Finance and CFO</font></p>    </td>
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<p style="margin:0in 0in .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mesa Laboratories,&nbsp;Inc.</font></p>    </td>
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