<TABLE> <S> <C>


<ARTICLE> 5
<RESTATED>

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS<F1><F2>           6-MOS<F3><F4>           3-MOS<F5><F6>
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JAN-01-1996             JAN-01-1996             JAN-01-1996
<PERIOD-END>                               SEP-30-1996             JUN-30-1996             MAR-31-1996
<CASH>                                       3,436,832               3,917,332               3,562,045
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                2,992,589               3,086,781               3,194,820
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                  3,033,058               2,579,140               3,071,465
<CURRENT-ASSETS>                             9,893,506              10,083,657              10,316,739
<PP&E>                                       4,984,880               4,940,386               4,567,424
<DEPRECIATION>                               2,590,701               2,527,272               2,368,925
<TOTAL-ASSETS>                              12,408,023              12,621,456              12,714,618
<CURRENT-LIABILITIES>                        3,702,041               4,278,412               4,471,944
<BONDS>                                      1,356,794               1,385,959               1,520,279
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        42,888                  42,446                  40,433
<OTHER-SE>                                   4,746,835               4,499,763               3,975,103
<TOTAL-LIABILITY-AND-EQUITY>                12,408,023              12,621,456              12,714,618
<SALES>                                     18,177,739              12,914,827               6,768,156
<TOTAL-REVENUES>                            18,455,098              13,136,923               6,943,164
<CGS>                                       15,497,007              11,002,851               5,733,206
<TOTAL-COSTS>                               15,497,007              11,002,851               5,733,206
<OTHER-EXPENSES>                             1,742,070               1,157,063                 571,922
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                             209,468                 141,880                  67,846
<INCOME-PRETAX>                              1,006,553                 835,129                 570,190
<INCOME-TAX>                                   306,289                 315,710                 179,927
<INCOME-CONTINUING>                            700,264                 519,419                 390,263
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                   700,264                 519,419                 390,263
<EPS-PRIMARY>                                      .17                     .12                     .10
<EPS-DILUTED>                                      .13                     .09                     .07

<FN>
<F1> Accounts receivable are net of allowance of $98,000 at September 30, 1996.
<F2> Inventories are net of reserve of $124,000 at September 30, 1996.
<F3> Accounts receivable are net of allowance of $103,000 at June 30, 1996.
<F4> Inventories are net of reserve of $193,000 at June 30, 1996.
<F5> Accounts receivable are net of allowance of $103,000 at March 31, 1996.
<F6> Inventories are net of reserve of $318,000 at March 31, 1996.

</TABLE>