WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  

<MULTIPLIER> 1,000
       

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-END>                               DEC-31-1994
<CASH>                                           4,245
<SECURITIES>                                    72,200
<RECEIVABLES>                                   33,161
<ALLOWANCES>                                       694
<INVENTORY>                                     24,889
<CURRENT-ASSETS>                               144,343
<PP&E>                                         202,988
<DEPRECIATION>                                 142,550
<TOTAL-ASSETS>                                 238,694
<CURRENT-LIABILITIES>                           36,014
<BONDS>                                          9,047
<COMMON>                                        10,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     148,769
<TOTAL-LIABILITY-AND-EQUITY>                   238,694

<SALES>                                        155,001
<TOTAL-REVENUES>                               166,189
<CGS>                                          104,567
<TOTAL-COSTS>                                  137,031
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                    32
<INTEREST-EXPENSE>                                 401
<INCOME-PRETAX>                                 28,757
<INCOME-TAX>                                     9,210
<INCOME-CONTINUING>                             19,547
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                        (244)
<NET-INCOME>                                    19,303
<EPS-PRIMARY>                                     3.81
<EPS-DILUTED>                                        0