
<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
FORM 10-K AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS
</LEGEND>

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                       3,654,000
<SECURITIES>                                 1,800,000
<RECEIVABLES>                                2,620,000
<ALLOWANCES>                                         0
<INVENTORY>                                  3,272,000
<CURRENT-ASSETS>                            12,961,000
<PP&E>                                       9,772,000
<DEPRECIATION>                               7,186,000
<TOTAL-ASSETS>                              15,851,000
<CURRENT-LIABILITIES>                        4,822,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        37,000
<OTHER-SE>                                   8,881,000
<TOTAL-LIABILITY-AND-EQUITY>                15,851,000
<SALES>                                     22,324,000
<TOTAL-REVENUES>                                     0
<CGS>                                       16,557,000
<TOTAL-COSTS>                                6,531,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             145,000
<INCOME-PRETAX>                              (353,000)
<INCOME-TAX>                                 (130,000)
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 (223,000)
<EPS-PRIMARY>                                    (.08)
<EPS-DILUTED>                                    (.08)


</TABLE>
