AMENDMENT TO EMPLOYMENT AGREEMENT THIS AMENDMENT TO CERTAIN EMPLOYMENT AGREEMENT, dated 16th of December, 1994, is entered into on this the 29th day of August, 1997, by NICHOLS SELECT CORPORATION, a Delaware corporation and the wholly owned subsidiary...

                 AMENDMENT TO EMPLOYMENT AGREEMENT

     THIS   AMENDMENT  TO  CERTAIN  EMPLOYMENT  AGREEMENT,  dated  16th  of
December, 1994,  is  entered  into on this the 29th day of August, 1997, by
XXXXXXX SELECT CORPORATION, a Delaware  corporation  and  the  wholly owned
subsidiary of NRC, and Xxxxxx X. Xxxxxxxxx, ("Employee").  Unless otherwise
defined,  capitalized terms used herein shall have the meaning ascribed  to
such terms  in  the  Employment  Agreement or Merger Agreement (hereinafter
defined).

                       W I T N E S S E T H:

     WHEREAS, Xxxxxxx Research Corporation  ("NRC"), SELECT, a wholly owned
subsidiary of NRC,  TXEN, Inc. ("TXEN"), and  the  holders  of  all  of the
$0.002  par  value  Class  A Common Stock of TXEN (the "Shareholders") have
entered into and consummated  an Agreement of Merger dated as of August 27,
1997 (the "Merger Agreement") whereby TXEN merged with and into SELECT;

     WHEREAS,  the  Employee's  continued  employment  with  SELECT  was  a
material inducement to SELECT and NRC to enter into the Merger Agreement;

     WHEREAS, the Employee owned  Class A Common Stock of TXEN and received
a portion of the Merger Consideration;

     WHEREAS,  NRC,  pursuant to Section  2  of  Employment  Agreement  has
elected to extend Employee's Term of Employment after the Effective Date of
the merger of TXEN into SELECT; and

     WHEREAS, NRC, SELECT,  and  Employee  mutually  desire  that  Employee
continue to be employed by SELECT;

     NOW,  THEREFORE,  in  consideration  of  the  mutual  covenants herein
contained, the undersigned parties do hereby amend the Employment Agreement
as follows:

          1.   SELECT  agrees  to  the  continued  employment  of  the
     Employee,  and the Employee agrees to accept continued employment
     by SELECT on  a  full-time  basis as President of SELECT with the
     same Duties and Salary as set  forth in the Employment Agreement,
     except that Employee shall report  to the Chief Executive Officer
     of SELECT.

          2.   Section 2 of said Employment  Agreement  is  amended to
     read as follows:

               2.   TERM OF EMPLOYMENT.  This Agreement shall  commence  as
               of  the Effective Date of the Merger Agreement and shall end
               two  (2)   years   from   the  date  hereof  (the  "Term  of
               Employment"),  unless  terminated  earlier  or  extended  as
               provided herein.

          3.   Unless the context requires  otherwise,  all references
     to TXEN, Inc., in the Employment Agreement shall mean SELECT.

     Except as amended above, the Employment Agreement shall remain in full
force and effect according to its terms and conditions.

     IN WITNESS WHEREOF, the parties have hereunto executed  this Amendment
to Employment Agreement on the date and year first above written.

                              XXXXXXX SELECT CORPORATION

                                    Xxxxxxx X. Xxxx
                              By:________________________________
                                  Xxxxxxx X. Xxxx,
                                  Its:  Chief Executive Officer

                                  Xxxxxx X. Xxxxxxxxx
                              ___________________________________
                              Xxxxxx X. Xxxxxxxxx, Employee