<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM EXX INC. AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                       4,174,000
<SECURITIES>                                 1,800,000
<RECEIVABLES>                                2,360,000
<ALLOWANCES>                                         0
<INVENTORY>                                  3,672,000
<CURRENT-ASSETS>                            13,439,000
<PP&E>                                       9,813,000
<DEPRECIATION>                               7,391,000
<TOTAL-ASSETS>                              15,916,000
<CURRENT-LIABILITIES>                        4,686,000
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        37,000
<OTHER-SE>                                   9,150,000
<TOTAL-LIABILITY-AND-EQUITY>                15,916,000
<SALES>                                     10,852,000
<TOTAL-REVENUES>                                     0
<CGS>                                        7,626,000
<TOTAL-COSTS>                                2,972,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              69,000
<INCOME-PRETAX>                                407,000
<INCOME-TAX>                                   138,000
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   269,000
<EPS-PRIMARY>                                      .10
<EPS-DILUTED>                                      .10