<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
ACCOMPANYING FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          APR-30-1998
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               APR-30-1998
<CASH>                                           4,358
<SECURITIES>                                       680
<RECEIVABLES>                                   21,242
<ALLOWANCES>                                       305
<INVENTORY>                                     15,360
<CURRENT-ASSETS>                                46,617
<PP&E>                                          84,110
<DEPRECIATION>                                  47,211
<TOTAL-ASSETS>                                 102,350
<CURRENT-LIABILITIES>                           17,177
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        23,246
<OTHER-SE>                                      16,573
<TOTAL-LIABILITY-AND-EQUITY>                   102,350
<SALES>                                        128,058
<TOTAL-REVENUES>                               128,058
<CGS>                                           64,854
<TOTAL-COSTS>                                   64,854
<OTHER-EXPENSES>                                46,926
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,588
<INCOME-PRETAX>                                 15,684
<INCOME-TAX>                                     6,584
<INCOME-CONTINUING>                              9,100
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     9,100
<EPS-PRIMARY>                                      .52<F1>
<EPS-DILUTED>                                      .51<F1>
<FN>
<F1>THIS STATEMENT HAS BEEN RESTATED AS A RESULT OF SFAS NO. 128, EARNINGS PER
SHARE, AND APPLICABLE STOCK SPLITS.
</FN>