<ARTICLE> 5

                             
<MULTIPLIER>                  1,000
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                           7,416
<SECURITIES>                                         0
<RECEIVABLES>                                    3,746
<ALLOWANCES>                                         0
<INVENTORY>                                      1,743
<CURRENT-ASSETS>                                 1,091
<PP&E>                                          32,595
<DEPRECIATION>                                (20,665)
<TOTAL-ASSETS>                                  25,926
<CURRENT-LIABILITIES>                            4,923
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            91
<OTHER-SE>                                      20,674
<TOTAL-LIABILITY-AND-EQUITY>                    25,926
<SALES>                                         16,427
<TOTAL-REVENUES>                                16,427
<CGS>                                          (6,439)
<TOTAL-COSTS>                                  (6,439)
<OTHER-EXPENSES>                                 6,865
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                  25
<INCOME-PRETAX>                                  3,098
<INCOME-TAX>                                       631
<INCOME-CONTINUING>                              2,467
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     2,467
<EPS-BASIC>                                       0.30
<EPS-DILUTED>                                     0.29