<ARTICLE> 5 <PERIOD-TYPE> 3-MOS 12-MOS <FISCAL-YEAR-END> MAR-31-1996 MAR-31-1996 <PERIOD-END> MAR-31-1996 MAR-31-1996 <CASH> 12,706,957 12,706,957 <SECURITIES> 0 0 <RECEIVABLES> 6,092,881 6,092,881 <ALLOWANCES> 152,633 152,633 <INVENTORY> 1,816,233 1,816,233 <CURRENT-ASSETS> 21,892,727 21,892,727 <PP&E> 23,249,336 23,249,336 <DEPRECIATION> 14,732,284 14,732,284 <TOTAL-ASSETS> 30,421,592 30,421,592 <CURRENT-LIABILITIES> 4,638,526 4,638,526 <BONDS> 0 0 <PREFERRED-MANDATORY> 0 0 <PREFERRED> 0 0 <COMMON> 43,464 43,464 <OTHER-SE> 25,241,095 25,241,095 <TOTAL-LIABILITY-AND-EQUITY> 30,421,592 30,421,592 <SALES> 8,985,000 33,289,982 <TOTAL-REVENUES> 8,985,000 33,289,982 <CGS> 5,338,000 20,688,947 <TOTAL-COSTS> 5,338,000 20,688,947 <OTHER-EXPENSES> 55,000 20,426 <LOSS-PROVISION> 0 95,000 <INTEREST-EXPENSE> 28,000 113,126 <INCOME-PRETAX> 2,137,000 7,354,952 <INCOME-TAX> 805,000 2,219,088 <INCOME-CONTINUING> 1,332,000 4,964,264 <DISCONTINUED> 0 0 <EXTRAORDINARY> 0 0 <CHANGES> 0 0 <NET-INCOME> 1,332,000 4,964,264 <EPS-PRIMARY> 0.28 1.20 <EPS-DILUTED> 0.28 1.20