<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the Balance
Sheet and statement of operations found on pages 2, 3 and 4 of the company's
form 10-QSB for the year-to-date, and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<MULTIPLIER>   1000
       
                                    
<PERIOD-TYPE>                          6-MOS
<FISCAL-YEAR-END>                       APR-30-1996
<PERIOD-END>                            OCT-31-1996
<CASH>                                          741
<SECURITIES>                                    973
<RECEIVABLES>                                 1,222
<ALLOWANCES>                                     61
<INVENTORY>                                   1,384
<CURRENT-ASSETS>                              4,846
<PP&E>                                        6,192
<DEPRECIATION>                                4,181
<TOTAL-ASSETS>                                7,117
<CURRENT-LIABILITIES>                         1,240
<BONDS>                                         383
<COMMON>                                         30
<PREFERRED-MANDATORY>                             0
<PREFERRED>                                       0
<OTHER-SE>                                    5,284
<TOTAL-LIABILITY-AND-EQUITY>                  7,117
<SALES>                                       5,031
<TOTAL-REVENUES>                              5,031
<CGS>                                         2,764
<TOTAL-COSTS>                                 2,764
<OTHER-EXPENSES>                              1,910
<LOSS-PROVISION>                                  6
<INTEREST-EXPENSE>                               21
<INCOME-PRETAX>                                 408
<INCOME-TAX>                                    158
<INCOME-CONTINUING>                             249
<DISCONTINUED>                                    0
<EXTRAORDINARY>                                   0
<CHANGES>                                         0
<NET-INCOME>                                    249
<EPS-PRIMARY>                                   .09
<EPS-DILUTED>                                   .08