<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>                                 9-MOS
<FISCAL-YEAR-END>                       APR-30-1998
<PERIOD-END>                            JAN-31-1998
<CASH>                                          763
<SECURITIES>                                    721
<RECEIVABLES>                                 1,699
<ALLOWANCES>                                     73
<INVENTORY>                                   1,132
<CURRENT-ASSETS>                              4,558
<PP&E>                                        6,847
<DEPRECIATION>                                4,290
<TOTAL-ASSETS>                                7,268
<CURRENT-LIABILITIES>                         1,482
<BONDS>                                           0
<COMMON>                                         30
<PREFERRED-MANDATORY>                             0
<PREFERRED>                                       0
<OTHER-SE>                                    5,576
<TOTAL-LIABILITY-AND-EQUITY>                  7,268
<SALES>                                       7,629
<TOTAL-REVENUES>                              7,629
<CGS>                                         4,530
<TOTAL-COSTS>                                 4,530
<OTHER-EXPENSES>                              2,972
<LOSS-PROVISION>                                 27
<INTEREST-EXPENSE>                               27
<INCOME-PRETAX>                                 195
<INCOME-TAX>                                     71
<INCOME-CONTINUING>                             124
<DISCONTINUED>                                    0
<EXTRAORDINARY>                                   0
<CHANGES>                                         0
<NET-INCOME>                                    124
<EPS-PRIMARY>                                   .04
<EPS-DILUTED>                                   .04