SETTLEMENT AGREEMENT AND MUTUAL RELEASE

      This Settlement Agreement and Mutual Release (the "Agreement") is made 
and entered between JOHN D. KNIGHT ("Knight") and INTELLIGENT CONTROLS, INC. 
("INCON") for the purpose of settling all claims between Knight and INCON 
arising out of Knight's employment with INCON, including those which are 
subject to pending litigation in the Cumberland County Superior Court, 
Docket No. CV-96-770.

      WHEREAS, Knight and INCON wish to resolve this litigation and all 
claims therein without further expense and without any admission of 
liability on the part of any party;

                                 WITNESSETH:

      In consideration of the covenants set forth herein and for valuable 
consideration, the sufficiency of which is hereby acknowledged, Knight and 
INCON agree as follows:

      1.  INCON will pay Knight $407,660 in respect to paragraphs 4 and 5 of 
the Mediation Memorandum dated April 13, 1998.

      2.  INCON acknowledges Knight's exercise of the Incentive Stock 
Options in the full amount of 100,000 shares of INCON stock at the price of 
$1.25 per share pursuant to the Incentive Stock Option Agreement dated July 
30, 1987. INCON acknowledges that Knight exercised these options by his 
timely tender of funds to INCON in the amount of $125,000 within 90 days of 
his termination from INCON.  INCON shall issue Knight 100,000 shares of 
INCON stock.

      3.  Knight agrees to sell, and INCON will re-purchase the 100,000 
shares of INCON shares of stock from Mr. Knight at a price of $3.25 per 
share.

      4.  INCON shall pay to Knight an additional $40,000 in cash.

      5.  It is understood and agreed that Knight may have certain tax 
liabilities as a result of the transactions set forth above, and the 
responsibility for these liabilities is Knight's and not INCON's.

      6.  It is further understood and agreed that the transaction whereby 
Knight acquires the 100,000 shares of INCON stock for $1.25 per share shall 
be scheduled by the parties in such a way as to accomplish these 
transactions without any cash needing to pass from Knight to INCON for the 
purchase of said stock.  In addition, to the extent there are any additional 
non-tax-related costs to Knight as a result of the transaction set forth 
above, they will be calculated 24 hours prior to the time of the closing, 
and must be approved in writing by Knight or his counsel before the closing. 
 If any additional costs are approved by Knight, they will be offset from 
the final amount to be paid to Knight at the time of the closing.

      7.  It is further understood and agreed that the parties will close on 
all transactions set forth in Paragraphs 1 - 6 above, as soon as practicable 
after May 10, 1998, but in no event later than May 15, 1998.

      8.  INCON and Knight agree that the "Confidentiality and Non-
Competition Agreement" dated December 29, 1986, the "Confidentiality and 
Non-Solicitation Agreement" dated February 28, 1991, and Exhibit A executed 
by INCON on March 26, 1997, and by Knight on April 21, 1997, expire on the 
date this document is executed.  Neither INCON nor Knight will have any 
further obligation thereunder.

      9.  Knight and INCON agree to execute a stipulation to entry of 
judgment stating that Knight's payment to INCON of $125,000, together with 
notice to INCON for the Incentive Stock Options on September 27, 1996, 
exercised those stock options and that INCON has agreed to issue the share 
certificate for the 100,000 shares of INCON stock with respect to which 
Knight exercised those stock options on September 27, 1996.

      10.  Knight represents that he has reviewed INCON's most recent Form 
10-KSB filed on March 27, 1998, the definitive Proxy Statement filed on 
March 30, 1998, and Schedule 13E-4 filed on March 30, 1998, and has 
otherwise conducted such investigation as he considers appropriate in 
connection with his investment decision concerning the disposition of his 
shares and related option rights pursuant to this Agreement.

      11.  Knight and INCON agree to execute a Stipulation to Dismiss all 
claims and counterclaims against each other, with prejudice, each party to 
bear its own costs and attorney's fees.

      12.  Release by Knight.  Knight hereby forever releases and discharges 
INCON and Ampersand Ventures, their divisions, subsidiaries, parents and/or 
related companies, and their predecessors, affiliates, successors and 
assigns and all of their agents, employees, attorneys, officers, directors 
and shareholders and all persons acting by or through, under or in concert 
with any of them, and each of them (hereafter "the Releasees"), of and from 
any and all claims, complaints, liabilities, obligations, promises, 
agreements, controversies, damages, actions, causes of action, suits, 
rights, demands, costs, losses, injuries, charges, debts and expenses or 
claims for attorney's fees of any kind or nature whatsoever, known or 
unknown, which Knight now has or claims to have, or which Knight at any time 
had or claimed to have had, against each or any of the Releasees, as of or 
prior to the date of this Agreement.  This Release and Discharge includes 
but is not limited to any and all claims of any kind whatsoever, resulting, 
arising out of or connected directly or indirectly to Knight's previous 
employment with INCON and/or its affiliates or subsidiaries and the subject 
matter of the lawsuit pending in the Superior Court, Cumberland County, 
Docket No. CV-96-770.  Knight specifically releases and discharges the 
Releasees from any claim he has or may have under the Age Discrimination and 
Employment Act ("ADEA"), the Employee Retirement Income Security Act 
("ERISA"), and all other federal or state laws related to his employment.  
Knight acknowledges that he has reviewed this Agreement with his own 
attorney before signing the Agreement.  Knight also acknowledges that he has 
been given twenty-one (21) days to decide whether or not to sign this 
Agreement.  Knight also understands that if he signs this Agreement he has 
seven (7) days to revoke the Agreement if he desires.  This Release is 
binding upon Knight's heirs, successors and assigns and the 
administrator/executor of Knight's estate.  Knight does not release, and it 
is hereby agreed that Knight has preserved, all rights which he has pursuant 
to (a) the "Mandatory Indemnification of Directors and Officers" set forth 
in Article VI, Section 6.1; (b) the "Advance Payment of Expenses" set forth 
in Article VI, Section 6.3; (c) the "Non-Exclusive Remedy Benefit" provision 
set forth in Article VI, Section 6.4; (d) the "Insurance" provision set 
forth in Article VI, Section 6.5; and (e) any other benefit or right to 
which Knight might be entitled pursuant to the By-Laws of Intelligent 
Controls, Inc., in effect on June 28, 1996.

      13.  Release by INCON.  In consideration of the promises and 
undertakings of Knight herein, INCON, its divisions, subsidiaries, parent 
and/or related companies, its predecessors, affiliates, successors and 
assigns and all of its agents, employees, attorneys, officers, directors, 
and persons acting by or through, under or in concert with any of them, and 
each of them (hereafter the INCON Releasors) hereby release and forever 
discharge Knight, his heirs, successors, and assigns, from any and all 
claims, demands, rights, and causes of action of whatsoever kind or nature, 
arising from or by reason of any and all known and unknown, foreseen and 
unforeseen, damages, including, but not limited to, any claim for payment of 
health insurance premiums and all claims alleged or which could have been 
alleged in a civil action pending in Cumberland County Superior Court, 
entitled John D. Knight v. Intelligent Controls, Inc., with docket number 
CV-96-770, and from any and all claims, demands, rights and causes of 
action, of whatsoever kind or nature, arising out of any conduct of Knight 
in his capacity as an employee, officer, director, or shareholder of INCON 
or arising out of any contract between INCON and Knight, including, but not 
limited to, the Confidentiality and Non-Competition Agreement, the 
Confidentiality and Non-Solicitation Agreement, and Exhibit A, more fully 
described in paragraph 8 of this Agreement.  INCON further agrees to 
indemnify Knight against any actions by shareholders, officers, directors, 
and employees of INCON arising out of his employment with INCON, including, 
but not limited to his actions as an officer and director of INCON.

      14.  Entire Agreement. This Settlement Agreement and Release 
constitutes the entire agreement between the parties pertaining to the 
subject matter contained herein.  There are no covenants, promises, 
undertakings or understandings outside of this Agreement.  No supplement, 
modification, or amendment of this Agreement shall be binding unless 
executed in writing by the parties sought to be bound.

      15.  Governing Law.  This Agreement shall be enforced according to the 
laws of the State of Maine.

      16.  No Admission of Liability. This Agreement shall not in any way be 
construed as an admission of liability by any party, except that INCON 
agrees that Knight exercised the Incentive Stock Options with respect to 
100,000 shares of INCON stock on September 27, 1996.

      17.  Non Assignment.  Knight and INCON warrant that they have not 
assigned any claims of the type identified in the above Settlement and 
Mutual Release to any other person or entity.

      Dated this 13th day of May, 1998.


/s/ Keith J. Johnson                   /s/ John D. Knight
Witness                                John D. Knight


      Dated this 21st day of May, 1998.

                                       INCON

/s/ Sharon Binette                     By: /s/ Roger E. Brooks
Witness                                Its President