<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMEDICS INC.'S ANNUAL REPORT ON FORM 10-K FOR THE PERIOD ENDED JANUARY 2, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> JAN-02-1999 <PERIOD-END> JAN-02-1999 <CASH> 81,950 <SECURITIES> 0 <RECEIVABLES> 47,733 <ALLOWANCES> 2,850 <INVENTORY> 40,958 <CURRENT-ASSETS> 254,438 <PP&E> 33,838 <DEPRECIATION> 22,484 <TOTAL-ASSETS> 408,483 <CURRENT-LIABILITIES> 70,606 <BONDS> 47,552 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 4,174 <OTHER-SE> 243,953 <TOTAL-LIABILITY-AND-EQUITY> 408,483 <SALES> 208,644 <TOTAL-REVENUES> 208,644 <CGS> 114,222 <TOTAL-COSTS> 114,222 <OTHER-EXPENSES> 12,902 <LOSS-PROVISION> 610 <INTEREST-EXPENSE> 1,777 <INCOME-PRETAX> 28,292 <INCOME-TAX> 10,688 <INCOME-CONTINUING> 14,939 <DISCONTINUED> 4,074 <EXTRAORDINARY> 4,597 <CHANGES> 0 <NET-INCOME> 23,610 <EPS-BASIC> 0.57 <EPS-DILUTED> 0.55