<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          10,510
<SECURITIES>                                         0
<RECEIVABLES>                                   56,090
<ALLOWANCES>                                       966
<INVENTORY>                                     49,709
<CURRENT-ASSETS>                               124,887
<PP&E>                                         109,564
<DEPRECIATION>                                  40,389
<TOTAL-ASSETS>                                 346,969
<CURRENT-LIABILITIES>                           79,542
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           132
<OTHER-SE>                                     256,183
<TOTAL-LIABILITY-AND-EQUITY>                   346,969
<SALES>                                        215,162
<TOTAL-REVENUES>                               215,162
<CGS>                                          149,259
<TOTAL-COSTS>                                  194,447
<OTHER-EXPENSES>                                 2,674
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                (99)
<INCOME-PRETAX>                                 18,140
<INCOME-TAX>                                     5,860
<INCOME-CONTINUING>                             12,280
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    12,280
<EPS-BASIC>                                       1.00
<EPS-DILUTED>                                      .97

<F1>This number does not include $4.6 million of costs and estimated earnings on
long-term contracts.