<ARTICLE>                          5
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  the
consolidated balance sheets,  consolidated statements of income and consolidated
statements of cash flows  included in the Company's  Form 10-Q for the six month
period  ended June 30,  1998,  and is  qualified in its entirety by reference to
such financial statements and the notes thereto.
</LEGEND>
<CURRENCY>                                  U.S. DOLLARS
       
                                         
<PERIOD-TYPE>                                          6-MOS
<FISCAL-YEAR-END>                                      DEC-31-1998
<PERIOD-START>                                         JAN-1-1998
<PERIOD-END>                                           JUN-30-1998
<EXCHANGE-RATE>                                        1
<CASH>                                                    2,356,000
<SECURITIES>                                                      0
<RECEIVABLES>                                            45,796,000
<ALLOWANCES>                                              1,041,000

<INVENTORY>                                               2,698,000
<CURRENT-ASSETS>                                         58,273,000
<PP&E>                                                   33,691,000
<DEPRECIATION>                                           17,115,000
<TOTAL-ASSETS>                                           99,671,000
<CURRENT-LIABILITIES>                                    27,307,000
<BONDS>                                                           0
<COMMON>                                                 42,874,000
<PREFERRED-MANDATORY>                                             0
<PREFERRED>                                                       0
<OTHER-SE>                                                        0
<TOTAL-LIABILITY-AND-EQUITY>                             99,671,000
<SALES>                                                  62,031,000
<TOTAL-REVENUES>                                         62,031,000
<CGS>                                                    35,801,000
<TOTAL-COSTS>                                            35,801,000
<OTHER-EXPENSES>                                         24,293,000
<LOSS-PROVISION>                                            250,000
<INTEREST-EXPENSE>                                          597,000
<INCOME-PRETAX>                                           1,090,000
<INCOME-TAX>                                                496,000
<INCOME-CONTINUING>                                         594,000
<DISCONTINUED>                                                    0
<EXTRAORDINARY>                                                   0
<CHANGES>                                                         0
<NET-INCOME>                                                594,000
<EPS-PRIMARY>                                                  0.07
<EPS-DILUTED>                                                  0.07