<ARTICLE>                     5
<LEGEND>

      This schedule contains summary financial information extracted from the
consolidated balance sheet and the consolidated statement of earnings and is
qualified in its entirety by reference to such financial statements.

</LEGEND>
<MULTIPLIER>                                     1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUN-30-1998
<PERIOD-END>                               DEC-31-1997
<CASH>                                         $16,815
<SECURITIES>                                     8,466
<RECEIVABLES>                                   20,935
<ALLOWANCES>                                       694
<INVENTORY>                                     13,994
<CURRENT-ASSETS>                                64,909
<PP&E>                                          26,622
<DEPRECIATION>                                  14,062
<TOTAL-ASSETS>                                  86,649
<CURRENT-LIABILITIES>                           13,243
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         1,114
<OTHER-SE>                                      69,145
<TOTAL-LIABILITY-AND-EQUITY>                    86,649
<SALES>                                         51,593
<TOTAL-REVENUES>                                51,593
<CGS>                                           28,552
<TOTAL-COSTS>                                   14,716
<OTHER-EXPENSES>                                   452
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  8,694
<INCOME-TAX>                                     3,307
<INCOME-CONTINUING>                              5,387
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,387
<EPS-PRIMARY>                                      .50
<EPS-DILUTED>                                      .44