<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> MAY-31-1998 <PERIOD-END> NOV-30-1997 <CASH> 731,300 <SECURITIES> 0 <RECEIVABLES> 2,159,800 <ALLOWANCES> 208,000 <INVENTORY> 1,150,200 <CURRENT-ASSETS> 3,314,500 <PP&E> 4,663,800 <DEPRECIATION> 3,382,800 <TOTAL-ASSETS> 5,149,700 <CURRENT-LIABILITIES> 1,337,400 <BONDS> 9,653,700 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,811,500 <OTHER-SE> (7,918,700) <TOTAL-LIABILITY-AND-EQUITY> 5,149,700 <SALES> 2,941,800 <TOTAL-REVENUES> 2,941,800 <CGS> 2,139,400 <TOTAL-COSTS> 2,139,400 <OTHER-EXPENSES> 738,900 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 127,900 <INCOME-PRETAX> (64,400) <INCOME-TAX> 0 <INCOME-CONTINUING> (64,400) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (64,400) <EPS-PRIMARY> (.01) <EPS-DILUTED> .00