<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
applicable SEC Form and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                           7,108
<SECURITIES>                                         0
<RECEIVABLES>                                    6,753
<ALLOWANCES>                                         0
<INVENTORY>                                      4,156
<CURRENT-ASSETS>                                19,119
<PP&E>                                          25,029
<DEPRECIATION>                                  14,347
<TOTAL-ASSETS>                                  29,801
<CURRENT-LIABILITIES>                            7,213
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         6,690
<OTHER-SE>                                      13,952
<TOTAL-LIABILITY-AND-EQUITY>                    29,801
<SALES>                                         47,220
<TOTAL-REVENUES>                                47,220
<CGS>                                           23,653
<TOTAL-COSTS>                                   23,653
<OTHER-EXPENSES>                                11,257
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  66
<INCOME-PRETAX>                                 12,244
<INCOME-TAX>                                     4,112
<INCOME-CONTINUING>                              8,132
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     8,132
<EPS-PRIMARY>                                     1.25<F1>
<EPS-DILUTED>                                     1.23<F1>
<FN>
<F1>SHARES AND EARNINGS PER SHARE HAVE BEEN ADJUSTED IN THE FINANCIAL STATEMENTS
AND IN THIS FINANCIAL DATA SCHEDULE TO REFLECT A TWO-FOR-ONE STOCK SPLIT
EFFECTED IN THE FORM OF A DIVIDEND WHICH WAS EFFECTIVE AS OF SEPTEMBER 22,
1997.
</FN>