<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q
FOR THE QUARTER ENDED MARCH 31, 1998, AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> USD
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<EXCHANGE-RATE>                                      1
<CASH>                                           4,458
<SECURITIES>                                    16,411
<RECEIVABLES>                                   31,805
<ALLOWANCES>                                       980
<INVENTORY>                                     38,458
<CURRENT-ASSETS>                                99,345
<PP&E>                                         101,004
<DEPRECIATION>                                  44,930
<TOTAL-ASSETS>                                 191,263
<CURRENT-LIABILITIES>                           48,394
<BONDS>                                         33,696
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           140
<OTHER-SE>                                     104,541
<TOTAL-LIABILITY-AND-EQUITY>                   191,263
<SALES>                                         42,150
<TOTAL-REVENUES>                                42,150
<CGS>                                           26,043
<TOTAL-COSTS>                                   26,043
<OTHER-EXPENSES>                                12,202
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 730
<INCOME-PRETAX>                                  3,329
<INCOME-TAX>                                     1,165
<INCOME-CONTINUING>                              2,164
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,164
<EPS-PRIMARY>                                      .15
<EPS-DILUTED>                                      .15