<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET, STATEMENT OF OPERATIONS AND NOTES TO THE
CONSOLIDATED FINANCIAL STATEMENT AND IS QUALIFIED IN ITS ENTIRTY BY REFERENCE TO
SUCH FINANCIAL STATEMENTS AND FOOTNOTES.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996
<PERIOD-START>                             JAN-01-1997             JAN-01-1996
<PERIOD-END>                               JUN-30-1997             JUN-30-1996
<CASH>                                          21,714                       0
<SECURITIES>                                     4,247                       0
<RECEIVABLES>                                  150,916                       0
<ALLOWANCES>                                    (8,181)                      0
<INVENTORY>                                     81,159                       0
<CURRENT-ASSETS>                               282,641                       0
<PP&E>                                         239,279                       0
<DEPRECIATION>                                (141,300)                      0
<TOTAL-ASSETS>                                 483,534                       0
<CURRENT-LIABILITIES>                          182,904                       0
<BONDS>                                         61,175                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           213                       0
<OTHER-SE>                                     229,973                       0
<TOTAL-LIABILITY-AND-EQUITY>                   483,534                       0
<SALES>                                        162,934                 155,021
<TOTAL-REVENUES>                               293,652                 274,047
<CGS>                                          109,145                 104,601
<TOTAL-COSTS>                                  205,170                 193,634
<OTHER-EXPENSES>                                52,718                  48,854
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               3,636                   4,073
<INCOME-PRETAX>                                 32,235                  28,041
<INCOME-TAX>                                    11,605                  10,093
<INCOME-CONTINUING>                             20,630                  17,948
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    20,630                  17,948
<EPS-PRIMARY>                                     0.96                    0.87
<EPS-DILUTED>                                     0.94                    0.85
        

</TABLE>