<ARTICLE> 5 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> MAR-31-1999 <PERIOD-START> APR-01-1998 <PERIOD-END> JUN-30-1998 <CASH> 7,763,200 <SECURITIES> 0 <RECEIVABLES> 13,757,680 <ALLOWANCES> 295,273 <INVENTORY> 16,700,624 <CURRENT-ASSETS> 38,667,975 <PP&E> 23,874,285 <DEPRECIATION> 15,665,276 <TOTAL-ASSETS> 54,670,970 <CURRENT-LIABILITIES> 8,676,128 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,141,203 <OTHER-SE> 44,853,639 <TOTAL-LIABILITY-AND-EQUITY> 54,670,970 <SALES> 18,583,072 <TOTAL-REVENUES> 18,583,072 <CGS> 8,229,230 <TOTAL-COSTS> 8,837,900 <OTHER-EXPENSES> (159,008) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 1,674,950 <INCOME-TAX> 553,000 <INCOME-CONTINUING> 1,121,950 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,121,950 <EPS-PRIMARY> .10 <EPS-DILUTED> .10