<ARTICLE> 5 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> SEP-30-1998 <CASH> 401,800 <SECURITIES> 0 <RECEIVABLES> 3,139,900 <ALLOWANCES> 586,900 <INVENTORY> 959,900 <CURRENT-ASSETS> 4,102,000 <PP&E> 2,795,300 <DEPRECIATION> 2,275,300 <TOTAL-ASSETS> 5,194,700 <CURRENT-LIABILITIES> 1,590,300 <BONDS> 962,200 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 412,800 <OTHER-SE> 2,229,400 <TOTAL-LIABILITY-AND-EQUITY> 5,149,700 <SALES> 8,936,300 <TOTAL-REVENUES> 8,963,100 <CGS> 5,506,000 <TOTAL-COSTS> 5,506,000 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 27,300 <INTEREST-EXPENSE> 96,400 <INCOME-PRETAX> 663,900 <INCOME-TAX> 66,500 <INCOME-CONTINUING> 597,400 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 597,400 <EPS-PRIMARY> 0.18 <EPS-DILUTED> 0.15