<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AS OF JUNE 30, 1998 AND THE CONSOLIDATED STATEMENT
OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 30, 1998.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          15,828
<SECURITIES>                                     8,426
<RECEIVABLES>                                   24,169
<ALLOWANCES>                                     (196)
<INVENTORY>                                     19,501
<CURRENT-ASSETS>                                69,039
<PP&E>                                          66,850
<DEPRECIATION>                                (38,215)
<TOTAL-ASSETS>                                 140,205
<CURRENT-LIABILITIES>                           27,875
<BONDS>                                         11,958
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       132,676
<OTHER-SE>                                    (32,304)
<TOTAL-LIABILITY-AND-EQUITY>                   140,205
<SALES>                                         51,555
<TOTAL-REVENUES>                                51,555
<CGS>                                           35,951
<TOTAL-COSTS>                                   62,690
<OTHER-EXPENSES>                                  (54)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 748
<INCOME-PRETAX>                               (10,220)
<INCOME-TAX>                                        65
<INCOME-CONTINUING>                           (10,285)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (10,285)
<EPS-PRIMARY>                                   (1.10)
<EPS-DILUTED>                                   (1.10)