<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS, STATEMENT OF OPERATIONS, AND NOTES TO THE
CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1996
<PERIOD-START>                             JAN-01-1997             JAN-01-1996
<PERIOD-END>                               SEP-30-1997             SEP-30-1996
<CASH>                                          18,068                       0
<SECURITIES>                                     4,018                       0
<RECEIVABLES>                                  157,282                       0
<ALLOWANCES>                                    (7,013)                      0
<INVENTORY>                                     89,839                       0
<CURRENT-ASSETS>                               294,273                       0
<PP&E>                                         242,826                       0
<DEPRECIATION>                                (140,039)                      0
<TOTAL-ASSETS>                                 501,082                       0
<CURRENT-LIABILITIES>                          187,202                       0
<BONDS>                                         58,556                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           216                       0
<OTHER-SE>                                     246,521                       0
<TOTAL-LIABILITY-AND-EQUITY>                   501,082                       0
<SALES>                                        245,112                 231,956
<TOTAL-REVENUES>                               444,182                 410,469
<CGS>                                          165,143                 157,077
<TOTAL-COSTS>                                  310,230                 289,631
<OTHER-EXPENSES>                                79,083                  73,031
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               5,657                   5,986
<INCOME-PRETAX>                                 49,089                  42,570
<INCOME-TAX>                                    17,672                  15,326
<INCOME-CONTINUING>                             31,417                  27,244
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    31,417                  27,244
<EPS-PRIMARY>                                     1.45                    1.32
<EPS-DILUTED>                                     1.41                    1.29
        

</TABLE>