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<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 275,718
<SECURITIES> 655,590
<RECEIVABLES> 1,585,634
<ALLOWANCES> 17,400
<INVENTORY> 1,521,747
<CURRENT-ASSETS> 4,369,591
<PP&E> 4,592,553
<DEPRECIATION> 3,103,225
<TOTAL-ASSETS> 6,402,363
<CURRENT-LIABILITIES> 437,302
<BONDS> 0
0
0
<COMMON> 129,633
<OTHER-SE> 5,835,428
<TOTAL-LIABILITY-AND-EQUITY> 6,402,363
<SALES> 7,411,809
<TOTAL-REVENUES> 7,411,809
<CGS> 3,595,686
<TOTAL-COSTS> 6,962,211
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 517,116
<INCOME-TAX> 197,000
<INCOME-CONTINUING> 320,116
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 320,116
<EPS-BASIC> .25
<EPS-DILUTED> .25
</TABLE>
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