<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS INCLUDED IN THE ACCOMPANYING FORM 10-Q AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                          16,558
<SECURITIES>                                     5,884
<RECEIVABLES>                                   37,107
<ALLOWANCES>                                         0
<INVENTORY>                                     28,578
<CURRENT-ASSETS>                               102,333
<PP&E>                                         115,030
<DEPRECIATION>                                  84,146
<TOTAL-ASSETS>                                 189,866
<CURRENT-LIABILITIES>                           44,913
<BONDS>                                          4,115
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        14,374
<OTHER-SE>                                      96,255
<TOTAL-LIABILITY-AND-EQUITY>                   189,866
<SALES>                                         47,070
<TOTAL-REVENUES>                                47,689
<CGS>                                           32,015
<TOTAL-COSTS>                                   43,004
<OTHER-EXPENSES>                                 1,010
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  23
<INCOME-PRETAX>                                  3,652
<INCOME-TAX>                                     1,338
<INCOME-CONTINUING>                              2,314
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,314
<EPS-PRIMARY>                                      .19
<EPS-DILUTED>                                      .19