Exhibit 32.2

            Certification of CFO Pursuant to 18 U.S.C. Section 1350,
      as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In  connection  with the  Quarterly  Report on Form 10-Q of  Trimble  Navigation
Limited (the  "Company")  for the  quarterly  period ended July 2, 2004 as filed
with the Securities and Exchange  Commission on the date hereof (the  "Report"),
Mary  Ellen  Genovese,  as  Chief  Financial  Officer  of  the  Company,  hereby
certifies, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the
Sarbanes-Oxley Act of 2002, to the best of her knowledge that:

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




                                      /s/ Mary Ellen Genovese
                                      -----------------------
                                      Name:  Mary Ellen Genovese
                                      Title: Chief Financial Officer
                                      Dated: August 6, 2004