<ARTICLE>           5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THERMO
VOLTEK CORPORATION'S REPORT ON FORM 10-Q FOR THE PERIOD ENDED OCTOBER 3, 1998
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>        1,000
       
                              
<PERIOD-TYPE>                                 9-MOS
<FISCAL-YEAR-END>                             JAN-02-1999
<PERIOD-END>                                  OCT-03-1998
<CASH>                                                 14,903
<SECURITIES>                                              502
<RECEIVABLES>                                           9,391
<ALLOWANCES>                                              603
<INVENTORY>                                            12,335
<CURRENT-ASSETS>                                       38,560
<PP&E>                                                 11,036
<DEPRECIATION>                                          7,718
<TOTAL-ASSETS>                                         60,245
<CURRENT-LIABILITIES>                                  10,541
<BONDS>                                                 5,250
<PREFERRED-MANDATORY>                                       0
<PREFERRED>                                                 0
<COMMON>                                                  497
<OTHER-SE>                                             33,957
<TOTAL-LIABILITY-AND-EQUITY>                           60,245
<SALES>                                                30,836
<TOTAL-REVENUES>                                       30,836
<CGS>                                                  17,357
<TOTAL-COSTS>                                          17,357
<OTHER-EXPENSES>                                        2,092
<LOSS-PROVISION>                                          143
<INTEREST-EXPENSE>                                        870
<INCOME-PRETAX>                                         1,007
<INCOME-TAX>                                              403
<INCOME-CONTINUING>                                       604
<DISCONTINUED>                                              0
<EXTRAORDINARY>                                             0
<CHANGES>                                                   0
<NET-INCOME>                                              604
<EPS-PRIMARY>                                            0.07
<EPS-DILUTED>                                            0.07