<ARTICLE> 5
<RESTATED>
<MULTIPLIER> 1,000
       
                                                                       
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1996             MAR-31-1997             MAR-31-1998
<PERIOD-START>                             APR-01-1995             APR-01-1996             APR-01-1997
<PERIOD-END>                               MAR-31-1996             MAR-31-1997             MAR-31-1998
<CASH>                                           1,141                   1,865                   1,131
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   14,613                  17,127                  15,048
<ALLOWANCES>                                       326                     350                     432
<INVENTORY>                                     17,403                  15,650                  20,810
<CURRENT-ASSETS>                                40,152                  43,486                  48,563
<PP&E>                                          42,016                  44,934                  49,889
<DEPRECIATION>                                  21,609                  23,824                  26,550
<TOTAL-ASSETS>                                  73,013                  85,805                  88,790
<CURRENT-LIABILITIES>                           19,542                  21,583                  28,567
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                           610                     638                     726
<OTHER-SE>                                      30,375                  51,190                  37,854
<TOTAL-LIABILITY-AND-EQUITY>                    73,013                  85,805                  88,790
<SALES>                                         65,056                  71,748                  79,552
<TOTAL-REVENUES>                                75,217                  80,780                  89,836
<CGS>                                           44,535                  48,507                  55,227
<TOTAL-COSTS>                                   48,909                  53,414                  61,657
<OTHER-EXPENSES>                                21,248                  27,748                  39,720
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 386                     183                     617
<INCOME-PRETAX>                                  5,060                   (382)                (11,541)
<INCOME-TAX>                                     1,418                   (181)                 (2,858)
<INCOME-CONTINUING>                              3,642                   (201)                 (8,683)
<DISCONTINUED>                                 (1,189)                   3,931                   2,089
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     2,453                   3,730                 (6,594)
<EPS-PRIMARY>                                     0.40                    0.59                  (0.95)
<EPS-DILUTED>                                     0.40                    0.59                  (0.95)