<ARTICLE> 5 <LEGEND> This schedule contains summary financial information extracted from Third Quarter Report to Stockholders and is qualified in its entirety by reference to such financial statements. </LEGEND> <MULTIPLIER>1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> SEP-27-1997 <CASH> 7,856 <SECURITIES> 4,500 <RECEIVABLES> 19,841 <ALLOWANCES> 0 <INVENTORY> 17,724 <CURRENT-ASSETS> 98,155 <PP&E> 71,705 <DEPRECIATION> 57,395 <TOTAL-ASSETS> 112,543 <CURRENT-LIABILITIES> 20,673 <BONDS> 0 <COMMON> 5,153 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 83,077 <TOTAL-LIABILITY-AND-EQUITY> 112,543 <SALES> 25,990 <TOTAL-REVENUES> 25,990 <CGS> 19,259 <TOTAL-COSTS> 25,749 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> (195) <INCOME-PRETAX> 2,041 <INCOME-TAX> 147 <INCOME-CONTINUING> 1,894 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,894 <EPS-PRIMARY> 0.37 <EPS-DILUTED> 0.37