<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENT OF INCOME AND THE CONSOLIDATED BALANCE SHEET AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-2000
<PERIOD-START>                             APR-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          15,340
<SECURITIES>                                    29,148
<RECEIVABLES>                                   51,635
<ALLOWANCES>                                         0
<INVENTORY>                                     12,341
<CURRENT-ASSETS>                               112,974
<PP&E>                                          59,583
<DEPRECIATION>                                  47,865
<TOTAL-ASSETS>                                 125,738
<CURRENT-LIABILITIES>                           24,063
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           132
<OTHER-SE>                                     100,935
<TOTAL-LIABILITY-AND-EQUITY>                   125,738
<SALES>                                         60,996
<TOTAL-REVENUES>                                60,996
<CGS>                                           37,329
<TOTAL-COSTS>                                   46,124
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 15,265
<INCOME-TAX>                                     4,732
<INCOME-CONTINUING>                             10,533
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    10,533
<EPS-BASIC>                                     0.80
<EPS-DILUTED>                                     0.78