<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FORM THE INCOME
STATEMENT FOR THE SIX- MONTHPERIOD ENDED JUNE 30, 1999, AND THE BALANCE SHEET AS
OF JUNE 30, 1999, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                           4,731
<SECURITIES>                                     9,656
<RECEIVABLES>                                   12,956
<ALLOWANCES>                                       267
<INVENTORY>                                     15,190
<CURRENT-ASSETS>                                46,570
<PP&E>                                          24,964
<DEPRECIATION>                                  13,528
<TOTAL-ASSETS>                                  66,115
<CURRENT-LIABILITIES>                            9,431
<BONDS>                                            289
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            75
<OTHER-SE>                                      55,086
<TOTAL-LIABILITY-AND-EQUITY>                    66,115
<SALES>                                         19,848
<TOTAL-REVENUES>                                24,385
<CGS>                                            7,107
<TOTAL-COSTS>                                    9,324
<OTHER-EXPENSES>                                13,108
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  26
<INCOME-PRETAX>                                  2,149
<INCOME-TAX>                                       688
<INCOME-CONTINUING>                              1,461
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     1,461
<EPS-BASIC>                                       0.20
<EPS-DILUTED>                                     0.19