<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS FOR THE FIRST, SECOND AND THIRD QUARTERS OF
FISCAL 1996. ON NOVEMBER 26, 1997, THE COMPANY ACQUIRED TINSLEY LABORATORIES,
INC. (TLI) AND HAS ACCOUNTED FOR THE TRANSACTION AS A POOLING OF INTERESTS. ALL
AMOUNTS BELOW HAVE BEEN RESTATED TO INCLUDE TLI.
</LEGEND>
<RESTATED> 
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          SEP-30-1996             SEP-30-1996             SEP-30-1996
<PERIOD-START>                             OCT-01-1995             JAN-01-1996             APR-01-1996
<PERIOD-END>                               DEC-31-1995             MAR-31-1996             JUN-30-1996
<CASH>                                         267,460                 241,262                 253,498
<SECURITIES>                                    34,736                  53,640                  44,852
<RECEIVABLES>                                  140,806                 146,347                 161,559
<ALLOWANCES>                                     4,690                   4,859                   4,897
<INVENTORY>                                    172,730                 189,751                 207,220
<CURRENT-ASSETS>                               622,298                 637,723                 671,091
<PP&E>                                         101,244                 117,718                 128,606
<DEPRECIATION>                                  63,443                  66,857                  70,115
<TOTAL-ASSETS>                                 667,714                 696,527                 737,581
<CURRENT-LIABILITIES>                          158,123                 168,900                 190,282
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       377,362                 377,400                 379,008
<OTHER-SE>                                     124,064                 141,942                 159,804
<TOTAL-LIABILITY-AND-EQUITY>                   667,714                 696,527                 737,581
<SALES>                                        162,181                 174,919                 172,777
<TOTAL-REVENUES>                               162,181                 174,919                 172,777
<CGS>                                           95,551                 103,124                  99,990
<TOTAL-COSTS>                                   95,551                 103,124                  99,990
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 168                     173                     151
<INCOME-PRETAX>                                 25,856                  27,703                  28,055
<INCOME-TAX>                                     9,079                   9,727                   9,857
<INCOME-CONTINUING>                             16,670                  17,848                  17,891
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    16,670                  17,848                  17,891
<EPS-PRIMARY>                                     0.56<F1>                0.59<F1>                0.59<F1>
<EPS-DILUTED>                                     0.55                    0.58                    0.59
<FN>
<F1>EPS PRIMARY IS USED FOR EPS BASIC. WHERE APPLICABLE, MINORITY INTEREST HAS BEEN
ADDED TO OR DEDUCTED FROM AFTER-TAX INCOME TO ARRIVE AT NET INCOME.
</FN>
        

</TABLE>