<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          47,955
<SECURITIES>                                     1,731
<RECEIVABLES>                                   46,380
<ALLOWANCES>                                         0
<INVENTORY>                                     47,278
<CURRENT-ASSETS>                               144,794
<PP&E>                                         132,354
<DEPRECIATION>                                  43,590
<TOTAL-ASSETS>                                 280,154
<CURRENT-LIABILITIES>                           71,109
<BONDS>                                         29,050
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        45,359
<OTHER-SE>                                      98,504
<TOTAL-LIABILITY-AND-EQUITY>                   280,154
<SALES>                                        100,797
<TOTAL-REVENUES>                               100,797
<CGS>                                           69,147
<TOTAL-COSTS>                                   69,147
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 19,620
<INCOME-TAX>                                     6,116
<INCOME-CONTINUING>                             13,504
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    13,504
<EPS-PRIMARY>                                      .30
<EPS-DILUTED>                                      .30