UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

                 [X] QUARTERLY REPORT UNDER SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                  For the quarterly period ended April 3, 1998

                                       OR

             [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                    For the transition period from____to____

                         Commission File Number 0-18645

                           TRIMBLE NAVIGATION LIMITED
             (Exact name of registrant as specified in its charter)

              California                            94-2802192
   (State or other jurisdiction of              (I.R.S. Employer
    incorporation or organization)               identification No.)

    645 North Mary Avenue, Sunnyvale, California         94088
    (Address of Principal Executive Offices)           (Zip Code)

                                 (408) 481-8000
              (Registrant's telephone number, including area code)

                                 Not Applicable
               (Former name, former address and former fiscal year, 
                if changed since last report)

     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during the  preceding  12 months  (or for such  shorter  periods  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.

                  Yes      X                No

     As of April 3, 1998,  there were 22,788,600  shares of Common Stock (no par
value) outstanding.






                           TRIMBLE NAVIGATION LIMITED

     This  report  contains  forward-looking  statements  within the  meaning of
Section 27A of the  Securities  Act of 1933 and  Section  21E of the  Securities
Exchange  Act of  1934.  Actual  results  could  differ  materially  from  those
indicated in the forward-looking  statements as a result of the risk factors set
forth in this  report.  The Company has  attempted  to identify  forward-looking
statements in this report by placing an asterisk (*) in the left-hand  margin of
paragraphs containing those statements.


                                      INDEX
                                                                         Page
PART I.  FINANCIAL INFORMATION                                          Number


         Item 1.    Financial Statements

                    Condensed Consolidated Balance Sheets -
                    April 3, 1998 and January 2, 1998                     3

                    Condensed Consolidated Statements of Operations -
                    Three Months ended April 3, 1998 and March 31, 1997   4

                    Condensed Consolidated Statements of Cash Flows -
                    Three Months ended April 3, 1998 and March 31, 1997   5

                    Notes to Condensed Consolidated Financial
                    Statements                                            6

         Item 2.    Management's Discussion and Analysis of Financial
                    Condition and Results of Operations                  10


PART II. OTHER INFORMATION


         Item 6.           Exhibits and Reports on Form 8-K              18


SIGNATURES                                                               19



                                       2


PART I. FINANCIAL INFORMATION
Item 1. Financial Statements

                           TRIMBLE NAVIGATION LIMITED
                      CONDENSED CONSOLIDATED BALANCE SHEETS

                                                        April 3,     January 2,
                                                          1998          1998
- -------------------------------------------------------------------------------
(In thousands)                                      (Unaudited)
 ASSETS
 Current assets:
     Cash and cash equivalents                          $ 16,931      $ 19,951
     Short term investments                               53,524        53,171
     Accounts and other receivable, net                   48,986        49,101
     Inventories                                          52,887        47,773
     Other current assets                                  4,002         4,195
                                                    -------------  ------------
        Total current assets                             176,330       174,191

     Net property and equipment                           21,629        21,965
     Intangible assets                                     3,563         3,725
     Deferred income taxes                                   335           356
     Other assets                                          7,161         7,426
                                                    -------------  ------------
        Total assets                                   $ 209,018     $ 207,663
                                                    =============  ============

 LIABILITIES AND SHAREHOLDERS' EQUITY
 Current liabilities:
     Current portion of long-term debt                     $ 166          $ 44
     Accounts payable                                     16,748        18,724
     Accrued compensation and benefits                     7,509         5,830
     Customer advances                                       823           830
     Accrued liabilities                                  10,261         9,391
     Income taxes payable                                  2,466         2,664
                                                    -------------  ------------
        Total current liabilities                         37,973        37,483
                                                    -------------  ------------

 Noncurrent portion of long-term debt and other 
     liabilities                                          30,607        30,697
                                                    -------------  ------------
 Total liabilities                                        68,580        68,180
                                                    -------------  ------------

 Shareholders' equity:
     Common stock                                        131,894       132,655
     Common stock warrants                                   700           700
     Retained earnings (accumulated deficit)               8,591         6,676
     Unrealized gain on short term investments                13             8
     Foreign currency translation adjustment                (760)         (556)
                                                    -------------  ------------
        Total shareholders' equity                       140,438       139,483
                                                    -------------  ------------
        Total liabilities and shareholders' equity     $ 209,018     $ 207,663
                                                    =============  ============



     See accompanying notes to condensed consolidated financial statements.

                                       3



                           TRIMBLE NAVIGATION LIMITED
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

                                                      Three Months Ended
                                                  April 3,          January 2,
                                                    1998               1998
- -------------------------------------------------------------------------------
(In thousands, except per share data)

 Total revenue                                     $ 76,608           $ 60,551
                                            ----------------   ----------------

 Operating expenses:
     Cost of sales                                   38,644             29,045
     Research and development                        11,827              9,001
     Sales and marketing                             16,458             14,348
     General and administrative                       7,484              6,406
                                            ----------------   ----------------
                                                     74,413             58,800
                                            ----------------   ----------------

 Operating income                                     2,195              1,751
                                            ----------------   ----------------

 Nonoperating income (expense):
     Interest income                                  1,043              1,053
     Interest and other expenses                       (858)              (966)
     Foreign exchange gain , net                         35                 91
                                            ----------------   ----------------
                                                        220                178
                                            ----------------   ----------------

 Income before income taxes                           2,415              1,929
 Income tax provision                                   500                500
                                            ----------------   ----------------

 Net income                                         $ 1,915            $ 1,429
                                            ================   ================

 Basic net income per share                          $ 0.08             $ 0.06
                                            ================   ================

 Shares used in calculating basic
     net income per share                            22,780             22,066
                                            ================   ================


 Diluted net income per share                        $ 0.08             $ 0.06
                                            ================   ================

 Shares used in calculating diluted
      net income per share                           23,620             22,434
                                            ================   ================




See accompanying notes to condensed consolidated financial statements.


                                       4





                           TRIMBLE NAVIGATION LIMITED
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1 - Basis of Presentation:

The  condensed  consolidated  financial  statements  for the three month periods
ended April 3, 1998, and March 31, 1997  presented in this  Quarterly  Report on
Form 10-Q are unaudited.  The balance sheet at January 2, 1998, has been derived
from the audited  financial  statements at that date but does not include all of
the  information  and  footnotes  required  by  generally  accepted   accounting
principles  for complete  financial  statements.  In the opinion of  management,
these  statements  include all adjustments  (consisting only of normal recurring
adjustments)  necessary  for a fair  statement  of the  results  for the interim
periods presented.  The condensed  consolidated  financial  statements should be
read in conjunction with the audited consolidated financial statements and notes
thereto  included in the Company's  Annual Report to  Shareholders  for the year
ended January 2, 1998.

During fiscal year 1997 and effective as of the Company's  1997 fiscal year end,
the  Company  changed  from a calendar  fiscal year end and adopted a 52-53 week
fiscal year ending on the Friday  nearest to December  31, which for fiscal 1998
will be  January  1,  1999.  The  Company  does not  expect  the  effects of any
differences  due to the change of fiscal years to have a material  impact on the
Company's financial results of operations.

The results of operations for the three month period ended April 3, 1998 are not
necessarily  indicative  of the results that may be expected for the year ending
January 1, 1999.


NOTE 2 - Inventories:

Inventories consist of the following:

                                           April 3,          January 2,
                                             1998               1998
- --------------------------------------------------------------------------
(In thousands)

Raw materials                              $ 34,317              $ 32,123
Work-in-process                               8,066                 7,123
Finished goods                               10,504                 8,527
                                     ---------------      ----------------
                                           $ 52,887              $ 47,773
                                     ---------------      ----------------



                                       5



NOTE 3 - New Accounting Standards:

As of January 3, 1998, the Company adopted Statement 130 (SFAS 130),  "Reporting
Comprehensive  Income."  SFAS 130  establishes  new rules for the  reporting and
display of  comprehensive  income and its components;  however,  the adoption of
SFAS 130 did not have any impact on the  Company's  net income or  shareholders'
equity for the period ended April 3, 1998. SFAS 130 requires unrealized gains or
losses to be reported on the Company's  securities  which are available for sale
and foreign  currency  translation  adjustments,  which  prior to adoption  were
reported  separately as part of shareholders'  equity and which were included in
other  comprehensive   income.   Prior  year  financial   statements  have  been
reclassified to conform with the requirements of SFAS 130.

The components of comprehensive  income, net of related tax for the three months
ended April 3, 1998 and March 31, 1997 are as follows:

                                                      April 3,      January 2,
                                                        1998           1998
- ------------------------------------------------------------------------------
(In thousands)

Net income                                             $ 1,915        $ 1,429
Unrealized gains/(losses) on securities                      5            (63)
Foreign currency translation adjustments                  (204)          (231)
                                                  -------------   ------------
Comprehensive income                                   $ 1,716        $ 1,135
                                                  =============   ============

The components of accumulated other  comprehensive  income, net of related taxes
at April 3, 1998 and January 2, 1998 are as follows:

                                                      April 3,      January 2,
                                                       1998            1998
- ------------------------------------------------------------------------------
(In thousands)

Unrealized gains/(losses) on securities                   $ 13            $ 8
Foreign currency translation adjustments                  (760)          (556)
                                                  -------------   ------------
Accumulated comprehensive income                        $ (747)        $ (548)
                                                  =============   ============


In June 1997,  the  Financial  Accounting  Standards  Board issued  Statement of
Financial  Accounting  Standards No. 131, (SFAS 131) "Disclosures about Segments
of an Enterprise  and Related  Information,  which is effective for fiscal years
beginning after December 15, 1997.  SFAS 131  establishes  standards for the way
that public business  enterprises report information about operating segments in
annual financial  statements and requires that those enterprises report selected
information  about  operating  segments in interim  financial  reports.  It also
establishes  standards  for related  disclosures  about  products and  services,
geographic  areas,  and  major  customers.  Because  SFAS 131 is  effective  for

                                       6



financial  statements  for fiscal years  beginning  after December 15, 1997, the
Company will adopt the new  requirements  for  reporting in fiscal year 1998 and
retroactively  restate fiscal year 1997. Management has not completed its review
of SFAS 131, but does not  anticipate  that the adoption of this  statement will
have a significant effect on the Company's reported segments.


NOTE 4 - Earnings Per Share:

The  following  table sets forth the  computation  of basic and diluted
earnings per share:

                                                          Three Months Ended
                                                          April 3,   January 2,
                                                           1998         1998
- -------------------------------------------------------------------------------
(in thousands except per share amounts)

Numerator:
    Income available to common shareholders
       used in basic and diluted income per share         $ 1,915      $ 1,429

Denominator:
     Weighted-average number of Common
        Shares used in basic income per share              22,780       22,066

     Effect of dilutive securities:
          Common stock options                                658          309
          Common stock warrants                               182           59
                                                       -----------   ----------

     Weighted-average number of Common
         Shares and dilutive potential Common Shares
        used in diluted income per share                   23,620       22,434
                                                       ===========   ==========


 Basic income per share                                    $ 0.08       $ 0.06
                                                       ===========   ==========
 Diluted income per share                                  $ 0.08       $ 0.06
                                                       ===========   ==========

NOTE 5 - Contingencies:

Shareholder Litigation

On December 6, 1995, two  shareholders  filed a class action lawsuit against the
Company and certain  directors  and officers of the Company.  Subsequent to that
date,  additional lawsuits were filed by other  shareholders.  The lawsuits were

                                       7



subsequently  amended and  consolidated  into one  complaint  which was filed on
April 5, 1996. The amended consolidated complaint sought to bring an action as a
class action  consisting  of all persons who  purchased  the common stock of the
Company during the period April 18, 1995,  through  December 5, 1995 (the "Class
Period").  The  plaintiffs  alleged  that the  defendants  sought to induce  the
members of the Class to purchase  the  Company's  common  stock during the Class
Period at  artificially  inflated  prices.  The  plaintiffs  seek  recissory  or
compensatory  damages with interest  thereon,  as well as reasonable  attorneys'
fees and extraordinary  equitable and/or injunctive  relief. The Company filed a
motion to dismiss,  which was heard by the Court on August 16,  1996.  The court
rejected  the  plaintiffs'  lawsuit,  but allowed  thirty  days to resubmit  its
complaint.  On September 24, 1996, the plaintiffs filed an amended complaint. On
April 28, 1997,  the Court  granted in part,  and denied in part,  the Company's
motion to dismiss.  The Court further  granted the  plaintiffs  leave to replead
certain dismissed claims. On June 19, 1997, the plaintiffs filed a third amended
and  consolidated  complaint.  The Company has answered the complaint by denying
all  liability.  The Company does not believe that it is possible to predict the
outcome of this litigation.

Other Litigation

On January 31, 1997,  counsel for one Philip M. Clegg wrote to Trimble asserting
that a license  under  Clegg's  U.S.  Patent  No.  4,807,131,  which was  issued
February  21,  1989,  would be  required by Trimble  because of a joint  venture
Trimble had entered  into with  Caterpillar  Corporation  concerning  the use of
Trimble GPS products in  combination  with earth moving  equipment.  To date, no
infringement  action has been initiated on behalf of Mr. Clegg. The Company does
not  believe  that there will be any  adverse  consequences  to the Company as a
result of this inquiry.

A former  shareholder has filed an action against the Company claiming rights to
shares that were previously  canceled on the Company's stock records pursuant to
lost stock certificate  indemnification  agreements. The complaint was dismissed
for a lack of jurisdiction.  The Company does not believe that there will be any
adverse consequences to the Company as a result of this case.

In October 1995,  an employee who was  terminated by the Company in 1992 filed a
complaint  against  the  Company,  alleging  that his  incentive  stock  options
continued  to  vest  subsequent  to  his  termination.   He  sought  damages  of
approximately  $1,000,000.  The Company filed a general  denial in answer to the
complaint.  The trial was concluded on September 25, 1997, and the jury rendered
its  verdict in favor of the  Company  on all  causes of  action.  It is unclear
whether the time for appeal has past, although no appeal has been filed to date.
The Company does not believe that an appeal, if any, would be successful.

                                       8



Item 2.                  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                      FINANCIAL CONDITION AND RESULTS OF OPERATIONS


RESULTS OF OPERATIONS


Revenues

Revenues  for the three  months  ended  April 3, 1998 and March 31,  1997,  were
$76,608,000  and  $60,551,0000,  respectively.  The table  below  breaks out the
Company's revenues by business unit:


                                               Three Months Ended April 3,
                                     ------------------------------------------
                                           April 3,      March 31,    Increase/
                                            1998          1997       (Decrease)
- -------------------------------------------------------------------------------
(In thousands)

   Commercial Systems                     $ 49,594      $ 38,122        30%
   Software & Component Technologies         8,947         9,575        (7)%
   Aerospace                                18,067        12,854        41%
                                     --------------  ------------  ----------
 Total                                    $ 76,608      $ 60,551        27%
                                     --------------  ------------  ----------

Commercial Systems

Commercial  Systems revenues  increased for the three months ended April 3, 1998
as compared to the corresponding  period for 1997. The increase was primarily in
the  Land  Survey,   Mapping  and  GIS  Systems,   and  Mobile  Positioning  and
Communications vertical markets.

The Land  Survey  market  increase  in the first  quarter of 1998 over the first
quarter  of 1997 is due in part to  strong  customer  acceptance  of the new GPS
Total Station 4800 product, which was introduced late the third quarter of 1997.

Mapping and GIS sales  increased in the first  quarter of 1998 as strong  demand
for the product line continued.

                                       9



Mobile  Positioning  and  Communications  revenues for the first quarter of 1998
were higher than the first  quarter of 1997 due to increased  demand for vehicle
tracking units and to sales of the Galaxy Sentinel  product which was introduced
in the second quarter of 1997.

Software and Component Technologies

* Software and Component  Technologies  revenues  decreased for the three months
ended April 3, 1998,  as  compared  with the  corresponding  period for 1997 due
primarily  to the slow down in the U.S.  market in embedded  GPS  products.  The
company  expects this  condition to continue at least through the second quarter
of fiscal  year 1998.  However,  the Company  believes  that it has been able to
maintained its market share worldwide.

Aerospace

*  Aerospace  revenues  increased  for the three  months  ending  April 3, 1998,
compared  with the  corresponding  period for 1997 due to  shipments to the U.S.
Government  under the CUGR  program and strong sales for  Honeywell-Trimble  (HT
9100), as well as strong sales for the Terra by Trimble product.

*  Military  sales  are  highly  dependent  on  contracts  that are  subject  to
government approval and are,  therefore,  expected to continue to fluctuate from
period to period.  The Company  believes that  opportunities in this market have
been substantially reduced by cutbacks in U.S. and foreign military spending.

Revenue outside the US

* Sales to  unaffiliated  customers  in  locations  outside  the U.S.  comprised
approximately 47% and 48% of revenue in the first three months of 1998 and 1997,
respectively.  During the first three  months of 1998,  the Company  experienced
higher revenues in the U.S. due primarily to strong  customer  acceptance of the
new GPS total station 4800 product The Company  anticipates  that export revenue
and sales made by its  subsidiaries in locations  outside the U.S. will continue
to account for a significant portion of its revenue and, therefore,  the Company
is subject to the risks inherent in these sales, including unexpected changes in
regulatory requirements, exchange rates, governmental approval, tariffs or other
barriers.  Even though the U.S. Government  announced on March 29, 1996, that it
would  support and  maintain  the GPS system,  as well as  eliminate  the use of
Selective Availability (S/A) (a method of degrading GPS accuracy),  customers in
certain  foreign  markets may be  reluctant  to purchase  products  based on GPS
technology  given  the  control  of GPS by the U.S.  Government.  The  Company's
results of operations could be adversely  affected if the Company were unable to
continue to generate significant sales in locations outside the U.S.

Gross Margin

* Gross margin varies on a quarterly basis due to a number of factors, including
product mix,  technology  license fees,  domestic  versus  international  sales,


                                       10


customer type, the effects of production volumes and fixed  manufacturing  costs
on unit  product  costs  and new  product  start-up  costs.  Gross  margin  as a
percentage of total product  revenue was 50% for the three months ended April 3,
1998, as compared with 52% in the corresponding 1997 period. The decrease in the
gross  margin  percentages  primarily  reflects  increased  labor costs from new
product introductions,  expediting fees and rework for materials, and the use of
outside  manufacturing  to relieve the  over-capacity  the Company is  currently
experiencing.  In addition, because of mix changes within and among the business
units,   market   pressures  on  unit  selling  prices,   fluctuations  in  unit
manufacturing  costs,  and other  factors,  there is no  assurance  that current
margins will be sustained.  While  commercial  systems products have the highest
gross  margins of all the  Company's  products,  their  margins have  decreased,
primarily  due to the need to lower  prices  in  response  to  competition.  The
Company expects competition to increase in its commercial system markets, and it
is therefore likely that further price erosion will occur, with consequent lower
gross margin percentages.

* The Company  also  expects  that a higher  percentage  of its  business in the
future will be conducted through  alliances with larger strategic  partners such
as  Honeywell,  Caterpillar  and Case.  As a result of  volume  pricing  and the
assumption of certain operating costs in connection with such partners,  margins
are likely to be lower than sales directly to end-users.

Operating Expenses

The  following  table shows  operating  expenses for the periods  indicated  and
should be read in conjunction with the narrative descriptions of those operating
expenses below:


                                  Three Months Ended
                           ----------------------------------------------
                                 April 3,       March 31,
                                  1998            1997           Increase
- -------------------------------------------------------------------------
(In Thousands)

Research and development       $ 11,827          $ 9,001              31%
Sales and marketing              16,458           14,348              15%
General and administrative        7,484            6,406              17%
                           -------------   --------------   -------------
     Total                     $ 35,769         $ 29,755              20%
                           -------------   --------------   -------------


Research and Development

Research and development  expenses  increased in the three months ended April 3,
1998, as compared with the  corresponding  1997 period.  The higher research and
development  expense in the 1998 period is due to an increase in  personnel  and
the related  expenses  which  accompany an increase in the number of  employees.

                                       11



There was also an increase in the number of specialized  engineering consultants
and temporary employees. The increase in research and development is part of the
Company's continuing aggressive development of future products.

* The Company  expects  that a  significant  portion of its future  revenues and
operating  income  will  continue to be derived  from sales of newly  introduced
products.  Consequently,  the Company's future success depends,  in part, on its
ability to continue to advance product technology and to develop and manufacture
new  competitive  products  with high  gross  profit  margins.  Development  and
manufacturing  schedules for technology  products are difficult to predict,  and
there can be no assurance that the Company will achieve timely initial  customer
shipments of new products.  The timely  availability of these products in volume
and their  acceptance by customers  are  important to the future  success of the
Company.  In  addition,  certain  of  the  Company's  products  are  subject  to
governmental  and similar  certifications  before they can be sold. For example,
FAA certification is required for all aviation  products.  An inability or delay
in obtaining such  certifications  could have an adverse effect on the Company's
operating results.

Sales and Marketing

The increase in sales and marketing expenses for the three months ended April 3,
1998, as compared with the  corresponding  period in 1997 is due primarily to an
increase in personnel and related  expenses  which  accompany an increase in the
number  of  employees.   In  addition,  the  Company  experienced  increases  in
advertising and promotional items incurred by Commercial Systems group for trade
shows which  occurred in the first quarter of 1998  including a world wide sales
conference  held by the Company in the first quarter of 1998,  which resulted in
increased travel expenses, as compared with the first quarter of 1997.

* The Company's  future growth will also depend upon the timely  development and
continued  viability of the markets in which the Company currently  competes and
upon the  Company's  ability to continue to identify and exploit new markets for
its products. In addition, the Company has encountered  significant  competition
in selected  markets,  and the Company expects such  competition to intensify as
the market for GPS applications  receives  acceptance.  Several of the Company's
competitors  are  major  corporations  with  substantially   greater  financial,
technical,  marketing and  manufacturing  resources.  Increased  competition  is
likely to result in reduced  market share and in price  reductions  of GPS-based
products, which could adversely affect the Company's revenues and profitability.

General and Administrative

The  increase in general and  administrative  expense for the three months ended
April 3, 1998, as compared with the corresponding  period for 1997, is primarily
do to an increase in  personnel  and the related  expenses  which  accompany  an
increase in the number of employees. There was also an increase in the number of
information system consultants and temporary employees.


                                       12



Income Taxes

The income tax rates of 21% and 26% for the three months ended April 3, 1998 and
March 31, 1997,  respectively,  are less than the federal  statutory rate of 35%
primarily due to realization  of previously  reserved  deferred tax assets.  The
1998 rate is lower than the 1997 rate  primarily  due to lower  taxes on foreign
income.

Inflation

The  effects of  inflation  on the  Company's  financial  results  have not been
significant to date.

Liquidity and Capital Resources

* At  April 3 1998,  the  Company  had  cash  and  cash  equivalents  of
$16,931,000 and short-term  investments of  $53,524,000.  The Company has relied
primarily on cash provided by operating and financing  activities  and net sales
of short-term  investments to fund capital  expenditures,  the repurchase of the
Company's  common stock (see further  explanation  below),  and other  investing
activities.  Management  believes that its cash, cash equivalents and short-term
investment balances,  together with its existing credit line, will be sufficient
to meet its anticipated cash needs for at least one-year.

For the three month period ended April 3, 1998, net cash provided from operating
activities  was  $1,029,000  as compared to cash  provided of  $6,152,00  in the
corresponding  period  in  1997.  Inventory  as of April 3,  1998  increased  by
$5,100,000 from the 1997 year end levels primarily due to purchases of strategic
parts,  and an increase in work in process and finished  goods that could not be
shipped prior to the Company's revenue recognition cut off for the quarter.  The
Company's  ability to continue to generate cash from operations will depend in a
large part on  revenues,  the rate of  collections  of accounts  receivable  and
management of inventory levels.

Cash  provided by sales of common stock in 1998  represents  the  proceeds  from
purchases  made  pursuant  to the  Company's  stock  option and  employee  stock
purchase plans and totaled $1,097,000 for the three months ended April 3, 1998.

In August  1997,  the Company  entered into a three year  $50,000,000  unsecured
revolving credit facility with four banks (the "Credit Agreement").  This credit
facility replaced the previous two year $30,000,000  unsecured line that expired
in August  1997.  The  Credit  Agreement  enables  the  Company  to borrow up to
$50,000,000,  provided that certain financial and other covenants are met. Under
a separate  agreement  the Company has an additional  $5,000,000  line of credit
provided only by the lead bank under the Credit Agreement for "Letter of Credit"
purposes,  and this is also subject to the covenants in the main  facility.  The
Credit  Agreement  provides  for  payment  of a  commitment  fee  of  0.25%  and
borrowings  to bear interest at 1% over LIBOR if the total funded debt to EBITDA
is less than or equal to 1.00 times,  0.3% and  borrowings  to bear  interest at
1.25% over LIBOR if the ratio is greater  than 1.00 times and less than or equal

                                       13



to 2.00 times,  or 0.4% and  borrowings  to bear interest at 1.75% over LIBOR if
the ratio is greater than 2.00 times.  In addition to borrowing at the specified
LIBOR rate,  the Company has the right to borrow with  interest at the higher of
(i) one of the bank's  annual  prime rate and (ii) the  federal  funds rate plus
0.5%.  To date,  the Company  has not made any  borrowings  under the lines.  In
addition, the Company is restricted from paying dividends under the terms of the
Credit Agreement.

In February  1996, the Company  announced  that it had approved a  discretionary
program whereby up to 600,000 shares of its common stock could be repurchased by
the Company to offset the potential  dilutive effects to earnings per share from
the issuance of stock options.  The Company  intends to use existing cash,  cash
equivalents  and short-term  investments  to finance any such stock  repurchases
under this program.  In 1996, the Company  purchased 250,000 shares at a cost of
$3,545,000.  In  1997,  the  Company  purchased  139,500  shares  at a  cost  of
$1,834,000. In the first quarter of 1998, the Company purchased 95,000 shares at
a cost of $1,859,000.

The  Company  is  continually   evaluating  potential  external  investments  in
technologies  related to its business and, to date,  has made  relatively  small
investments  in a number of GPS related  technology  companies.  There can be no
assurance that investments made to date and potential future investments will be
successful.

Year 2000 / GPS Week Number Rollover Issues

In prior years,  certain computer  programs were written using two digits rather
than four to define the applicable  year.  These  programs were written  without
considering  the impact of the upcoming change in the century and may experience
problems  handling  dates  beyond  the year  1999.  This  could  cause  computer
applications to fail or to create erroneous results unless  corrective  measures
are taken. Incomplete or untimely resolution of the Year 2000 issue could have a
material  adverse  impact on our  Company's  business,  operations  or financial
condition in the future.

The GPS week number  rollover  (WNRO) issue is peculiar to GPS  technology.  The
constellation  of GPS  satellites,  which  are  operated  by the  United  States
government, broadcast time in the form of a "GPS week number", and a time offset
into each "GPS  week."  Week  numbers  range  from 0 to 1023.  Week 0 started on
January 6, 1980,  and week 1023 will end on August 21,  1999,  at which time the
week  number  will  roll  over  back to 0.  This  may  cause  GPS  receivers  to
erroneously  interpret  high-week-number,  pre-WNRO  data as  post-dating  later
low-week-number,  post-WNRO  data.  This may  cause  satellite  positions  to be
miscalculated and produce gross position fix errors.  Receivers that process and
display calendar dates based on "weeks since 1980" may generate date calculation
errors.

Trimble has been  assessing the impact that the Year 2000 issue will have on the
Company's internal computer systems. In response to these assessments, which are
ongoing,  the Company has  developed a plan to  inventory  critical  systems and
develop  solutions  to  those  systems  that  are  found  to  have  date-related
deficiencies.   Project   plans  call  for  the   completion   of  the  solution
implementation  phase and testing of those  solutions  prior to any  anticipated

                                       14



impact on our systems.  The Company is also  surveying  critical  suppliers  and
customers to determine the status of their Year 2000 compliance programs.

Trimble is also  assessing the capability of its products sold to customers over
a period of years to handle the Year 2000 / GPS WNRO  issues.  The  Company  has
developed  a test  plan  that is based  upon the U.S.  Government  supplied  GPS
Receiver  Boundary  Rollover  Test  Plan.  The  Company's  test  plan  has  been
customized  for each of its  products  and  includes,  at a  minimum,  the tests
included  in the U.S.  Government  supplied  test plan.  To perform  these tests
Trimble  must  rely upon  commercially  available  simulators  to  simulate  the
satellites  during  WNRO.  We  have  received  compliance  statements  from  the
simulator  suppliers.  Based  on work to  date,  assuming  the  accuracy  of the
simulators,  and assuming that the proposed  project  plans,  which  continue to
evolve,  can be  implemented  as planned,  the  Company  believes  future  costs
relating to the Year 2000 / GPS WNRO  issues will not have a material  impact on
the Company's  consolidated  financial  position,  results of operations or cash
flows.

Other Risk Factors

The  Company's  revenues  have  historically  tended to fluctuate on a quarterly
basis due to the timing of shipments of products under contracts and the sale of
licensee  rights.  A  significant  portion of the Company's  quarterly  revenues
occurs from orders received and immediately shipped to customers in the last few
weeks and days of a quarter. If orders are not received, or if shipments were to
be  delayed  a few  days at the end of a  quarter,  the  operating  results  and
reported  earnings per share for that quarter could be  significantly  impacted.
Future revenues are difficult to predict, and projections are based primarily on
historical  models,  which are not necessarily  accurate  representations of the
future.

* The Company has a relatively  fixed cost  structure in the short term which is
determined by the business plans and strategies the Company intends to implement
in the  three  markets  it  addresses.  This  effective  leveraging  means  that
increases or decreases in revenues have more than a  proportional  impact on net
income or losses.  The Company  estimates that a change in product revenue of $1
million would change earnings per share by 2 to 3 cents

* The Company  believes  that its Software and Component  Technologies  business
unit will produce a significant portion of the Company's business in the future.
The Software and  Component  Technologies  business  unit differs in nature from
most  of the  Company's  markets  because  volumes  are  high  and  margins  are
relatively  low.  Software and  Component  Technologies  customers are extremely
price  sensitive.  As  costs  decrease  through  technological  advances,  these
advances are typically passed on to the customer. To compete in the Software and
Component  Technologies market requires high-volume production and manufacturing
techniques.  Customers expect high quality standards with very low defect rates.
Compared to  competitors  which have far greater  resources in such  high-volume
manufacturing  and  associated  support  activities,  the Company is  relatively
inexperienced.

                                       15


The  Company's  stock price is subject to  significant  volatility.  If revenues
and/or earnings fail to meet the expectations of the investment community, there
could  be an  immediate  and  significant  impact  on the  trading  price of the
Company's stock.

The  value of the  Company's  products  relies  substantially  on the  Company's
technical  innovation in fields in which there are many current patent  filings.
The  Company  recognizes  that as new  patents  are issued or are brought to the
Company's  attention by the holders of such patents, it may be necessary for the
Company to withdraw  products  from the market,  take a license from such patent
holders,  or redesign  its  products.  The  Company  does not believe any of its
products  infringe  patents or other  proprietary  rights of third parties,  but
cannot  be  certain  they  do  not do so.  In  addition,  the  legal  costs  and
engineering  time  required  to  safeguard  intellectual  property  or to defend
against litigation could become a significant expense of operations. Such events
could have a material adverse effect on the Company's revenues or profitability.
(See Note 5 to the Condensed  Consolidated Financial Statements - Contingencies:
Other Litigation)

The Company is  continuously  evaluating  alliances and external  investments in
technologies related to its business, and has already entered into alliances and
made  relatively  small  investments  in a  number  of  GPS  related  technology
companies.  Acquisitions of companies,  divisions of companies,  or products and
alliances  entail  numerous  risks,  including  (i) the  potential  inability to
successfully   integrate   acquired   operations  and  products  or  to  realize
anticipated  synergies,  economies of scale,  or other value;  (ii) diversion of
management's attention;  and (iii) loss of key employees of acquired operations.
Any  such  problems  could  have a  material  adverse  effect  on the  Company's
business,  financial condition, and results of operations.  No assurances can be
given that the Company will not incur problems from current or future alliances,
acquisitions,  or investments.  Furthermore,  there can be no assurance that the
Company  will  realize  value  from  any  such   alliances,   acquisitions,   or
investments.

The  Company's  products rely on signals from the GPS Navstar  satellite  system
built and maintained by the U.S.  Department of Defense.  Navstar satellites and
their  ground  support  systems  are  complex   electronic  systems  subject  to
electronic and mechanical  failures and possible  sabotage.  The satellites have
design  lives of 7.5  years and are  subject  to  damage  by the  hostile  space
environment  in  which  they  operate.   To  repair  damaged  or  malfunctioning
satellites is not economically  feasible.  If a significant number of satellites
were to become  inoperable,  there could be a substantial  delay before they are
replaced with new satellites.  A reduction in the number of operating satellites
would impair the current utility of the GPS system and the growth of current and
additional market opportunities. In addition, there can be no assurance that the
U.S.  Government  will remain  committed to the operation and maintenance of GPS
satellites  over a long  period  of  time,  or that  the  policies  of the  U.S.
Government for the use of GPS without charge will remain unchanged. However, the
1996  Presidential  Decision  Directive marks the first time in the evolution of
GPS that access and use for the  consumer,  civilian  and  commercial  use has a
solid foundation in law. Because of ever-increasing  commercial  applications of
GPS, other U.S. Government agencies may become involved in the administration or
the  regulation  of the use of GPS signals in the future.  Any of the  foregoing
factors  could affect the  willingness  of buyers of the  Company's  products to

                                       16



select  GPS-based  systems instead of products based on competing  technologies.
Any  resulting  change in market  demand for GPS products  would have a material
adverse effect on the Company's  financial  results.  In 1995,  certain European
government  organizations  expressed concern regarding the susceptibility of GPS
equipment  to  intentional  or  inadvertent  signal  interference.  Such similar
concern  could  translate  into  reduced  demand  for GPS  products  in  certain
geographic regions in the future.


                                       17




ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

                                                                      Page
         A.  Exhibits                                                Number

                    3.8       Bylaws of the Company, as amended       20-43

                    10.59     1993 Stock Option Plan, as amended      44-53

                    10.60     1988 Employee Stock Purchase Plan, as   54-67
                              amended

                    27.0      Financial Data Schedule for the quarters 
                              ended April 3, 1998 and March 31, 1997     68

         B.  Reports on Form 8-K

                    There  were no  reports  on Form  8-K  filed
                    during the quarter ended April 3, 1998





                                       18




                                   SIGNATURES



Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned, thereunto duly authorized.




TRIMBLE NAVIGATION LIMITED
(Registrant)



By:  /s/ Dennis R. Ing
     Dennis R. Ing
    (Executive Vice President Finance, Chief Financial
      Officer)



DATE:  May 15, 1998

                                       19