<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMEDICS INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED MARCH 29, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> JAN-03-1998 <PERIOD-END> MAR-29-1997 <CASH> 130,252 <SECURITIES> 65,272 <RECEIVABLES> 63,436 <ALLOWANCES> 4,891 <INVENTORY> 56,105 <CURRENT-ASSETS> 325,438 <PP&E> 50,560 <DEPRECIATION> 28,897 <TOTAL-ASSETS> 488,312 <CURRENT-LIABILITIES> 69,906 <BONDS> 73,465 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 3,685 <OTHER-SE> 225,585 <TOTAL-LIABILITY-AND-EQUITY> 488,312 <SALES> 72,057 <TOTAL-REVENUES> 72,057 <CGS> 36,961 <TOTAL-COSTS> 36,961 <OTHER-EXPENSES> 5,584 <LOSS-PROVISION> 202 <INTEREST-EXPENSE> 269 <INCOME-PRETAX> 26,991 <INCOME-TAX> 3,764 <INCOME-CONTINUING> 21,966 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 21,966 <EPS-PRIMARY> .60 <EPS-DILUTED> .56