<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR THE THREE MONTHS ENDED
SEPTEMBER 30, 1998 AND 1997, AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JUL-01-1998             JUL-01-1997
<PERIOD-END>                               SEP-30-1998             SEP-30-1997
<CASH>                                               0                     251
<SECURITIES>                                         0                       0
<RECEIVABLES>                                    4,300                   3,463
<ALLOWANCES>                                     (143)                   (198)
<INVENTORY>                                      5,263                   5,516
<CURRENT-ASSETS>                                 9,614                   9,259
<PP&E>                                           4,095                   3,964
<DEPRECIATION>                                 (3,560)                 (2,967)
<TOTAL-ASSETS>                                  10,751                  10,660
<CURRENT-LIABILITIES>                            8,283                   8,433
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                           218                     153
<OTHER-SE>                                       2,040                     715
<TOTAL-LIABILITY-AND-EQUITY>                    10,751                  10,660
<SALES>                                          3,193                   3,062
<TOTAL-REVENUES>                                 4,488                   4,231
<CGS>                                            2,762                   2,654
<TOTAL-COSTS>                                    4,902                   5,328
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                      45
<INTEREST-EXPENSE>                                 115                      90
<INCOME-PRETAX>                                  (529)                 (1,187)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                              (529)                 (1,187)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     (529)                 (1,187)
<EPS-PRIMARY>                                   (0.09)                  (0.26)
<EPS-DILUTED>                                   (0.09)                  (0.26)
        

</TABLE>