<ARTICLE> 5
<MULTIPLIER> 1000
       
                                                  
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-01-1998             JAN-01-1997
<PERIOD-END>                               JUN-27-1998             JUN-28-1997
<CASH>                                               0                       0
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   33,345                  30,447
<ALLOWANCES>                                     1,732                   2,027
<INVENTORY>                                     38,491                  35,965
<CURRENT-ASSETS>                                73,611                  68,124
<PP&E>                                          70,824                  69,553
<DEPRECIATION>                                  34,205                  30,770
<TOTAL-ASSETS>                                 133,552                 130,140
<CURRENT-LIABILITIES>                           21,168                  21,443
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           111                      57
<OTHER-SE>                                      93,664                  84,004
<TOTAL-LIABILITY-AND-EQUITY>                   133,552                 130,140
<SALES>                                        118,302                 113,543
<TOTAL-REVENUES>                               118,302                 113,543
<CGS>                                           88,681                  85,437
<TOTAL-COSTS>                                  104,566                 101,288
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                 332                     665
<INCOME-PRETAX>                                 13,404                  11,590
<INCOME-TAX>                                     5,348                   4,636
<INCOME-CONTINUING>                              8,056                   6,954
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     8,056                   6,954
<EPS-PRIMARY>                                      .71                     .61<F1>
<EPS-DILUTED>                                      .69                     .59<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>