<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> SEP-30-1997 <CASH> 13,024 <SECURITIES> 0 <RECEIVABLES> 49,786 <ALLOWANCES> 108 <INVENTORY> 48,920 <CURRENT-ASSETS> 115,867 <PP&E> 86,550 <DEPRECIATION> 40,227 <TOTAL-ASSETS> 221,299 <CURRENT-LIABILITIES> 33,561 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 37,760 <OTHER-SE> 149,978 <TOTAL-LIABILITY-AND-EQUITY> 221,299 <SALES> 137,562 <TOTAL-REVENUES> 137,562 <CGS> 60,336 <TOTAL-COSTS> 60,336 <OTHER-EXPENSES> 57,589 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 19,637 <INCOME-TAX> 4,960 <INCOME-CONTINUING> 4,677 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 14,677 <EPS-PRIMARY> 1.06 <EPS-DILUTED> 0