<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
THE QUARTERLY PERIOD ENDED JUNE 30, 1998 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL INFORMATION.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             APR-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          34,737
<SECURITIES>                                         0
<RECEIVABLES>                                   15,537
<ALLOWANCES>                                       600
<INVENTORY>                                     17,349
<CURRENT-ASSETS>                                72,649
<PP&E>                                          42,069
<DEPRECIATION>                                  18,068
<TOTAL-ASSETS>                                 102,054
<CURRENT-LIABILITIES>                            9,976
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        42,560
<OTHER-SE>                                      47,180
<TOTAL-LIABILITY-AND-EQUITY>                   102,054
<SALES>                                         88,909
<TOTAL-REVENUES>                                88,909
<CGS>                                           69,680
<TOTAL-COSTS>                                   69,680
<OTHER-EXPENSES>                                 6,182
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 13,831
<INCOME-TAX>                                     5,809
<INCOME-CONTINUING>                              8,022
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,022
<EPS-PRIMARY>                                      .90
<EPS-DILUTED>                                      .86