<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 1997. 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-30-1997             SEP-30-1997             SEP-30-1997
<PERIOD-START>                             OCT-01-1996             JAN-01-1997             APR-01-1997
<PERIOD-END>                               DEC-31-1996             MAR-31-1997             JUN-30-1997
<CASH>                                         215,588                 194,192                 151,930
<SECURITIES>                                    55,250                  71,138                  80,458
<RECEIVABLES>                                  141,876                 130,646                 140,574
<ALLOWANCES>                                     5,354                   5,958                   6,450
<INVENTORY>                                    223,607                 224,113                 221,770
<CURRENT-ASSETS>                               647,797                 638,299                 608,616
<PP&E>                                         174,815                 195,407                 216,189
<DEPRECIATION>                                  78,191                  83,338                  90,174
<TOTAL-ASSETS>                                 751,442                 759,560                 743,791
<CURRENT-LIABILITIES>                          186,446                 199,646                 175,072
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       379,558                 389,654                 392,862
<OTHER-SE>                                     174,697                 158,592                 165,065
<TOTAL-LIABILITY-AND-EQUITY>                   751,442                 759,560                 743,791
<SALES>                                        128,022                 145,881                 166,079
<TOTAL-REVENUES>                               128,022                 145,881                 166,079
<CGS>                                           79,268                  91,327                 103,333
<TOTAL-COSTS>                                   79,268                  91,327                 103,333
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 125                     165                     191
<INCOME-PRETAX>                                  5,661                (24,294)                  10,012
<INCOME-TAX>                                     1,883                 (8,210)                   3,450
<INCOME-CONTINUING>                              3,584                (15,982)                   6,562
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     3,584                (15,982)                   6,562
<EPS-PRIMARY>                                     0.11<F1>              (0.51)<F1>                0.21<F1>
<EPS-DILUTED>                                     0.11                  (0.51)                    0.20
<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>