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 April 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: May 5, 2004