<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-30-1998
<PERIOD-END>                            OCT-31-1997
<CASH>                                          576
<SECURITIES>                                    696
<RECEIVABLES>                                 1,724
<ALLOWANCES>                                     59
<INVENTORY>                                   1,188
<CURRENT-ASSETS>                              4,514
<PP&E>                                        6,704
<DEPRECIATION>                                4,192
<TOTAL-ASSETS>                                7,135
<CURRENT-LIABILITIES>                         1,493
<BONDS>                                           0
<COMMON>                                         30
<PREFERRED-MANDATORY>                             0
<PREFERRED>                                       0
<OTHER-SE>                                    5,427
<TOTAL-LIABILITY-AND-EQUITY>                  7,135
<SALES>                                       5,053
<TOTAL-REVENUES>                              5,053
<CGS>                                         2,997
<TOTAL-COSTS>                                 2,997
<OTHER-EXPENSES>                              1,953
<LOSS-PROVISION>                                 15
<INTEREST-EXPENSE>                               19
<INCOME-PRETAX>                                  69
<INCOME-TAX>                                     27
<INCOME-CONTINUING>                              42
<DISCONTINUED>                                    0
<EXTRAORDINARY>                                   0
<CHANGES>                                         0
<NET-INCOME>                                     42
<EPS-PRIMARY>                                   .01
<EPS-DILUTED>                                   .01