<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997             DEC-31-1996
<PERIOD-START>                             JAN-01-1998             JAN-01-1997             JAN-01-1996
<PERIOD-END>                               MAR-28-1998             MAR-29-1997             DEC-31-1996
<CASH>                                               0                       0                       0
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   33,747                  32,225                  31,565
<ALLOWANCES>                                     1,650                   1,662                   1,781
<INVENTORY>                                     34,478                  33,227                  32,396
<CURRENT-ASSETS>                                69,491                  67,496                  66,868
<PP&E>                                          70,504                  69,122                  68,485
<DEPRECIATION>                                  33,313                  29,893                  28,987
<TOTAL-ASSETS>                                 130,175                 130,103                 129,942
<CURRENT-LIABILITIES>                           25,288                  26,138                  26,525
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            56                      57                      57
<OTHER-SE>                                      93,644                  81,576                  77,868
<TOTAL-LIABILITY-AND-EQUITY>                   130,175                 130,103                 129,942
<SALES>                                         60,802                  59,469                 175,899
<TOTAL-REVENUES>                                60,802                  59,469                 175,899
<CGS>                                           45,488                  45,128                 128,217
<TOTAL-COSTS>                                   53,705                  52,971                 152,452
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 153                     318                     221
<INCOME-PRETAX>                                  6,944                   6,180                  23,226
<INCOME-TAX>                                     2,771                   2,472                   9,290
<INCOME-CONTINUING>                              4,173                   3,708                  13,936
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     4,173                   3,708                  13,936
<EPS-PRIMARY>                                      .74                     .65<F1>                2.43<F1>
<EPS-DILUTED>                                      .71                     .63<F1>                2.37<F1>
<FN>
<F1>The earnings per share amounts have been restated to comply with
Statement of Financial Accounting Standards No. 128, "Earnings per Share."
</FN>
        

</TABLE>