<ARTICLE> 5
<LEGEND>
This Schedule contains summary financial information extracted from the
financial statements contained in the body of the accompanying 10Q and is
qualified in its entirety by reference to such financial statements .
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1997
<CASH>                                           7,863
<SECURITIES>                                         0
<RECEIVABLES>                                   35,127
<ALLOWANCES>                                         0
<INVENTORY>                                     30,703
<CURRENT-ASSETS>                                81,088
<PP&E>                                         134,147
<DEPRECIATION>                                  93,360
<TOTAL-ASSETS>                                 159,711
<CURRENT-LIABILITIES>                           33,155
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        14,374
<OTHER-SE>                                      77,525
<TOTAL-LIABILITY-AND-EQUITY>                   159,711
<SALES>                                        114,093
<TOTAL-REVENUES>                               114,571
<CGS>                                           87,122
<TOTAL-COSTS>                                  108,482
<OTHER-EXPENSES>                                    12
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 591
<INCOME-PRETAX>                                  5,486
<INCOME-TAX>                                     2,053
<INCOME-CONTINUING>                              3,433
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,433
<EPS-PRIMARY>                                      .28
<EPS-DILUTED>                                      .28