<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24cannon.txt
<TEXT>
                                                                   EXHIBIT 24

                               POWER OF ATTORNEY
                        For Executing Forms 3, 4 and 5


      Know all by these presents, that the undersigned hereby constitutes and
appoints each of Roger L. Fix and Deborah A. Rosen, signing singly, his true
and lawful attorney-in-fact to:

      (1)         execute for and one behalf of the undersigned Forms 3, 4
         and/or 5 in accordance with Section 16(a) of the Securities Exchange
         Act of 1934 and the rules thereunder;

      (2)         do and perform any and all acts for and on behalf of the
         undersigned which may be necessary or desirable to complete the
         execution of any such Forms 3, 4 or 5 and the timely filing of such
         form with the United States Securities and Exchange Commission and any
         other authority; and

      (3)         take any other action of any type whatsoever in connection
         with the foregoing which, in the opinion of such attorney-in-fact, may
         be of benefit to, in the best interest of, or legally required by, the
         undersigned, it being understood that the documents executed by such
         attorney-in-fact on behalf of the undersigned pursuant to this Power
         of Attorney shall be in such form and shall contain such terms and
         conditions as such attorney-in-fact may approve in his/her discretion.

      The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform all and every act and thing whatsoever
requisite, necessary and proper to be done in the exercise of any of the rights
and power herein granted, as fully to all intents and purposes as such
attorney-in-fact might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or his/her substitute or substitutes, shall lawfully do or
cause to be done by virtue of this power of attorney and the rights and powers
herein granted.  The undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the undersigned, are not
assuming any of the undersigned's responsibilities to comply with Section 16 of
the Securities Exchange Act of 1934.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 14th day of May, 2004.


                                    /s/  Charles H. Cannon, Jr.
                                    _________________________________
                                    Charles H. Cannon, Jr.


</TEXT>
</DOCUMENT>
