<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS ON FORM 10-QSB AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-QSB </LEGEND> <MULTIPLIER> 1 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 9-MOS 9-MOS <FISCAL-YEAR-END> DEC-31-1997 DEC-31-1998 <PERIOD-START> JAN-01-1997 JAN-01-1998 <PERIOD-END> SEP-30-1997 SEP-30-1998 <EXCHANGE-RATE> 1 1 <CASH> 1,402,548 481,844 <SECURITIES> 0 0 <RECEIVABLES> 3,175,420 3,538,976 <ALLOWANCES> 85,000 107,900 <INVENTORY> 1,667,631 1,848,132 <CURRENT-ASSETS> 6,915,143 6,663,277 <PP&E> 23,559,710 24,729,255 <DEPRECIATION> 19,021,715 19,927,103 <TOTAL-ASSETS> 11,807,421 11,775,152 <CURRENT-LIABILITIES> 2,037,538 3,637,423 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 37,155 37,959 <OTHER-SE> 9,732,728 8,099,770 <TOTAL-LIABILITY-AND-EQUITY> 11,807,421 11,775,152 <SALES> 6,285,648 3,002,998 <TOTAL-REVENUES> 17,059,581 11,607,734 <CGS> 4,213,078 2,705,442 <TOTAL-COSTS> 15,396,624 13,712,714 <OTHER-EXPENSES> 0 0 <LOSS-PROVISION> 0 0 <INTEREST-EXPENSE> (13,940) (20,517) <INCOME-PRETAX> 1,676,897 (2,084,463) <INCOME-TAX> 100,000 9,000 <INCOME-CONTINUING> 1,576,897 (2,093,463) <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 1,576,897 (2,093,463) <EPS-PRIMARY> 0.52 (0.65) <EPS-DILUTED> 0.48 (0.65)