<ARTICLE> 5
<LEGEND>
THIS SCHEUDLE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMEDICS
INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 29, 1996 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-28-1996
<PERIOD-END>                               JUN-29-1996
<CASH>                                         131,416
<SECURITIES>                                    85,823
<RECEIVABLES>                                   60,189
<ALLOWANCES>                                     4,747
<INVENTORY>                                     54,011
<CURRENT-ASSETS>                               337,220
<PP&E>                                          44,880
<DEPRECIATION>                                  25,031
<TOTAL-ASSETS>                                 504,601
<CURRENT-LIABILITIES>                          121,118
<BONDS>                                         88,073
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         3,679
<OTHER-SE>                                     198,771
<TOTAL-LIABILITY-AND-EQUITY>                   504,601
<SALES>                                        140,088
<TOTAL-REVENUES>                               140,088
<CGS>                                           72,782
<TOTAL-COSTS>                                   72,782
<OTHER-EXPENSES>                                23,090
<LOSS-PROVISION>                                   606
<INTEREST-EXPENSE>                               2,537
<INCOME-PRETAX>                                 24,775
<INCOME-TAX>                                     5,060
<INCOME-CONTINUING>                             15,011
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    15,011
<EPS-PRIMARY>                                      .41
<EPS-DILUTED>                                      .40