<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> SEP-30-1997 <CASH> 374,000 <SECURITIES> 3,240,000 <RECEIVABLES> 10,667,000 <ALLOWANCES> (733,000) <INVENTORY> 268,000 <CURRENT-ASSETS> 14,270,000 <PP&E> 24,081,000 <DEPRECIATION> (16,756,000) <TOTAL-ASSETS> 29,085,000 <CURRENT-LIABILITIES> 7,666,000 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 18,711,000 <OTHER-SE> 0 <TOTAL-LIABILITY-AND-EQUITY> 29,085,000 <SALES> 28,546,000 <TOTAL-REVENUES> 28,546,000 <CGS> 17,513,000 <TOTAL-COSTS> 17,513,000 <OTHER-EXPENSES> 6,752,000 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 239,000 <INCOME-PRETAX> 4,247,000 <INCOME-TAX> 1,606,000 <INCOME-CONTINUING> 2,641,000 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 2,641,000 <EPS-PRIMARY> .30 <EPS-DILUTED> .30