EXHIBIT 32.1

                             CERTIFICATE PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned, Mason N. Carter, Chief Executive Officer of Merrimac
Industries, Inc. (the "Company"), hereby certifies, pursuant to 18 U.S.C. 1350,
as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     (1) The Company's Quarterly Report on Form 10-Q for the period ending
     October 1, 2005, as filed with the Securities and Exchange Commission on
     the date hereof (the "Quarterly Report"), fully complies with the
     requirements of Section 13(a) or 15(d) of the Securities Exchange Act of
     1934; and

     (2) The information contained in the Quarterly Report fairly presents, in
     all material respects, the financial condition and results of operations of
     the Company.




/s/ Mason N. Carter
-------------------
Mason N. Carter
Chief Executive Officer
November 15, 2005