<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
UNAUDITED CONSOLIDATED CONDENSED STATEMENT OF EARNINGS AND THE UNAUDITED
CONSOLIDATED CONDENSED BALANCE SHEETS OF THE REGISTRANT FOR THE SIX MONTHS 
ENDED JUNE 30, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                          32,886
<SECURITIES>                                     3,261
<RECEIVABLES>                                  206,214
<ALLOWANCES>                                    13,056
<INVENTORY>                                     62,788
<CURRENT-ASSETS>                               349,602
<PP&E>                                         402,270
<DEPRECIATION>                                 256,122
<TOTAL-ASSETS>                                 618,405
<CURRENT-LIABILITIES>                          132,489
<BONDS>                                         11,664
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        22,780
<OTHER-SE>                                       4,199
<TOTAL-LIABILITY-AND-EQUITY>                   618,405
<SALES>                                        365,266
<TOTAL-REVENUES>                               370,844
<CGS>                                          215,851
<TOTAL-COSTS>                                  215,851
<OTHER-EXPENSES>                               103,268
<LOSS-PROVISION>                                   825
<INTEREST-EXPENSE>                                 957
<INCOME-PRETAX>                                 50,768
<INCOME-TAX>                                    19,468
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    31,300
<EPS-PRIMARY>                                     1.36
<EPS-DILUTED>                                     1.36