<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> JUN-30-1998 <PERIOD-START> JUL-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 3,436,900 <SECURITIES> 1,031,600 <RECEIVABLES> 3,661,900 <ALLOWANCES> 0 <INVENTORY> 7,380,500 <CURRENT-ASSETS> 16,824,100 <PP&E> 10,539,500 <DEPRECIATION> 6,816,500 <TOTAL-ASSETS> 20,853,500 <CURRENT-LIABILITIES> 1,326,400 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 10,097,100 <OTHER-SE> (53,800) <TOTAL-LIABILITY-AND-EQUITY> 20,853,500 <SALES> 10,526,900 <TOTAL-REVENUES> 10,526,900 <CGS> 7,347,600 <TOTAL-COSTS> 7,347,600 <OTHER-EXPENSES> 3,560,300 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> (233,100) <INCOME-TAX> (90,900) <INCOME-CONTINUING> (142,200) <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (142,200) <EPS-PRIMARY> (.04) <EPS-DILUTED> (.04)