<ARTICLE> 5 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> MAR-31-1997 <PERIOD-END> SEP-30-1996 <CASH> 4,761,585 <SECURITIES> 0 <RECEIVABLES> 12,446,926 <ALLOWANCES> 265,333 <INVENTORY> 12,386,376 <CURRENT-ASSETS> 29,889,384 <PP&E> 21,561,703 <DEPRECIATION> 12,696,454 <TOTAL-ASSETS> 45,118,901 <CURRENT-LIABILITIES> 8,242,453 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,125,287 <OTHER-SE> 36,876,448 <TOTAL-LIABILITY-AND-EQUITY> 45,118,901 <SALES> 38,811,844 <TOTAL-REVENUES> 38,811,844 <CGS> 16,987,911 <TOTAL-COSTS> 16,639,774 <OTHER-EXPENSES> (173,087) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 5,357,246 <INCOME-TAX> 1,875,000 <INCOME-CONTINUING> 3,482,246 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 3,482,246 <EPS-PRIMARY> .30 <EPS-DILUTED> .30