EXHIBIT 3.1


                                                                  EXECUTION COPY
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                          FOURTH AMENDED AND RESTATED

                         CERTIFICATE OF INCORPORATION

                                      OF

                           SUMMAGRAPHICS CORPORATION


                           Dated as of July 23, 1996



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                          FOURTH AMENDED AND RESTATED

                         CERTIFICATE OF INCORPORATION

                                      OF

                           SUMMAGRAPHICS CORPORATION


          Summagraphics Corporation, a corporation organized and existing under
the General Corporation Law of the State of Delaware, filed its Certificate of
Incorporation with the Secretary of State of the State of Delaware on June 29,
1972 under the name "Scriptographics Corporation".  Desiring to amend its
Certificate of Incorporation, as heretofore amended, and to restate the same, as
amended, Summagraphics Corporation does hereby certify:

          FIRST:  That the Board of Directors of said Corporation, at a meeting
duly called at which a quorum was present and acting throughout, duly adopted a
resolution proposing and declaring advisable the amendment and restatement of
the Certificate of Incorporation of said Corporation as hereinafter set forth.

          SECOND:  That, thereafter, the stockholders of said Corporation, in a
manner and by the vote prescribed by Section 242 of the General Corporation Law
of the State of Delaware, voted in favor of the amendment and restatement.

          THIRD:  That this Fourth Amended and Restated Certificate of
Incorporation of Summagraphics Corporation has been duly adopted in accordance
with Sections 242 and 245 of the General Corporation Law of the State of
Delaware.

          FOURTH:  That the Third Restated Certificate of Incorporation of
Summagraphics Corporation is hereby amended and restated in its entirety as
follows:

          ARTICLE 1.  The name of the corporation is CalComp Technology, Inc.
     (hereinafter the "Corporation").

          ARTICLE 2.  The address of the Corporation's registered office in the
     State of Delaware is Corporation Trust Center, 1209 Orange Street, in the
     City of Wilmington, County of New Castle, Delaware  19801.  The name of its
     registered agent at such address is The Corporation Trust Company.

          ARTICLE 3.  The nature of the business or purposes to be conducted or
     promoted is to engage in any lawful act or activity for which corporations
     may be organized under the General Corporation Law of the State of
     Delaware.

 
          ARTICLE 4.  The total number of shares of stock which the Corporation
     shall have authority to issue is Sixty-Five Million (65,000,000), of which
     Sixty Million (60,000,000) shares of the par value of one cent ($.01) per
     share, amounting in the aggregate to Six Hundred Thousand Dollars
     ($600,000), shall be Common Stock, and Five Million (5,000,000) shares of
     the par value of one cent ($.01) per share, amounting in the aggregate to
     Fifty Thousand Dollars ($50,000), shall be Preferred Stock.  A description
     of the respective classes of stock and a statement of the designations,
     preferences, voting powers (or no voting powers), relative participating,
     optional or other special rights and privileges and the qualifications,
     limitations and restrictions of the Preferred Stock and Common Stock are as
     follows:

          (a)  Preferred Stock
               ---------------

               The Preferred Stock may be issued in one or more series at such
               time or times and for such consideration or considerations as the
               Board of Directors may determine. Each series shall be so
               designated as to distinguish the shares thereof from the shares
               of all other series and classes. The Board of Directors is
               expressly authorized, subject to the limitations prescribed by
               law and the provisions of this Fourth Amended and Restated
               Certificate of Incorporation, to provide for the issuance of all
               or any shares of the Preferred Stock in one or more series, each
               with such designations, preferences, voting powers (or no voting
               powers), relative, participating, optional or other special
               rights and privileges and such qualifications, limitations or
               restrictions thereof as shall be stated in the resolution or
               resolutions adopted by the Board of Directors to create such
               series, and a certificate setting forth said resolution or
               resolutions shall be filed in accordance with the General
               Corporation Law of the State of Delaware. The authority of the
               Board of Directors with respect to each such series shall
               include, without limitation of the foregoing, the right to
               provide that the shares of each such series may be:  (i) subject
               to redemption, at the option of either the holder or the
               Corporation or upon the happening of a specified event, at such
               time or times and at such price or prices; (ii) entitled to
               receive dividends (which may be cumulative or non-cumulative) at
               such rates, on such conditions, and at such times, and payable in
               preference to, or in such relation

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               to, the dividends payable on any other class or classes or any
               other series; (iii) entitled to such rights upon the dissolution
               of, or upon any distribution of the assets of, the Corporation;
               (iv) convertible into, or exchangeable for, at the option of
               either the holder or the Corporation or the happening of a
               specified event, shares of any other class or classes of stock,
               or of any other series of the same or any other class or classes
               of stock of the Corporation at such price or prices or at such
               rates of exchange and with such adjustments, if any; (v) entitled
               to the benefit of such limitations, if any, on the issuance of
               additional shares of such series or shares of any other series of
               Preferred Stock; or (vi) entitled to such other preferences,
               powers, qualifications, rights and privileges, all as the Board
               of Directors may deem advisable and as are not inconsistent with
               law or the provisions of this Fourth Amended and Restated
               Certificate of Incorporation.

          (b)  Common Stock
               ------------

               Except as otherwise required by law, this Fourth Amended and
               Restated Certificate of Incorporation, or as otherwise provided
               for in any resolutions of the Board of Directors providing for
               the issuance of shares of Preferred Stock in one or more series,
               the holders of the Common Stock, voting together as a single
               class with the holders of the Preferred Stock, if any, shall
               possess all of the voting power.  Each holder of Common Stock
               shall be entitled to one vote for each share held.  The
               Corporation shall not have cumulative voting.

          ARTICLE 5.  The Corporation is to have perpetual existence.

          ARTICLE 6.  The Board of Directors of the Corporation shall be
     comprised of seven members or such other number of members as is determined
     by the Board of Directors of the Corporation in accordance with the Bylaws.

          ARTICLE 7.  In furtherance and not in limitation of the powers
     conferred by the laws of the State of Delaware:

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          (a)  The Board of Directors of the Corporation is expressly authorized
               to adopt, amend or repeal the Bylaws of the Corporation.

          (b)  Elections of directors need not be by written ballot unless the
               Bylaws of the Corporation shall so provide.

          (c)  The books of the Corporation may be kept at such place within or
               without the State of Delaware as the Bylaws of the Corporation
               may provide or as may be designated from time to time by the
               Board of Directors of the Corporation.

          ARTICLE 8.  (a) The Corporation shall indemnify and hold harmless, to
     the fullest extent permitted by the General Corporation Law of the State of
     Delaware, any person who was or is made or is threatened to be made a party
     or is otherwise involved in any action, suit or proceeding, whether civil,
     criminal, administrative or investigative (a "proceeding"), by reason of
     the fact that such person, or a person for whom such person is the legal
     representative, is or was a director or officer of the Corporation or is or
     was serving at the request of the Corporation as a director or officer of
     another corporation or of a partnership, joint venture, trust, enterprise
     or nonprofit entity, including service with respect to employee benefit
     plans (an "indemnitee"), against all liability and loss suffered and
     expenses (including attorneys' fees) reasonably incurred by such
     indemnitee.  The Corporation shall be required to indemnify an indemnitee
     in connection with a proceeding (or part thereof) initiated by such
     indemnitee only if the initiation of such proceeding (or part thereof) by
     the indemnitee was authorized by the Board of Directors of the Corporation.

          (b)  Notwithstanding the foregoing subparagraph (a), a director or
               officer of the Corporation shall only be indemnified with respect
               to a criminal action or proceeding, if at all, if the director or
               officer had no reasonable cause to believe the conduct giving
               rise to such action or proceeding was unlawful.  The termination
               of any action, suit or proceeding by judgment, order, settlement,
               conviction, or upon a plea of nolo contendere or its equivalent,
               shall not, of itself, create the presumption that such person did
               not act in good faith and in a manner such person believed to be
               in or not opposed to the best interests of the Corporation and,
               with respect to a criminal action or proceeding, shall not

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               create the presumption that such person had reasonable cause to
               believe that the conduct giving rise to such action or proceeding
               was unlawful.

          (c)  Any and all indemnifications (except those ordered by a court)
               shall be made by the Corporation only as authorized in the
               specific case upon a determination that the indemnification of
               the director or officer is proper under the circumstances.  The
               determination of the propriety of indemnification in a specific
               case shall be made upon the affirmative vote of a majority of the
               directors who are not parties to the action, suit or proceeding,
               even if such directors comprise less than a quorum. In the event
               there are no such directors, or if such directors so direct, the
               determination shall be made by independent legal counsel in a
               written opinion or by the stockholders.

          (d)  The Corporation may, in the discretion of the majority of the
               Board of Directors who are not parties to the action, suit or
               proceeding, to pay expenses and legal fees incurred by a director
               or officer in defending any civil, criminal, administrative or
               investigative action in advance of its final disposition upon an
               undertaking by or on behalf of such director or officer to repay
               such amount if it shall ultimately be determined that the
               director or officer is not entitled to be indemnified by the
               Corporation.

          (e)  The Corporation is hereby authorized to purchase and maintain
               insurance on behalf of any person who is or was a director,
               officer, employee or agent of the Corporation, or was serving at
               the request of the Corporation as a director, officer, employee
               or agent of another corporation or other enterprise against any
               liability asserted against the director, officer, employee or
               agent and incurred by such person in any such capacity, or
               arising out of the director, officer, employee or agent's status
               as such, whether or not the Corporation would have the power to
               indemnify such person against liability under the law of the
               applicable jurisdiction.

          ARTICLE 9.  (a) Upon the consummation of the Plan of Reorganization
     and Agreement for the Exchange of Stock of CalComp Inc. for Stock of
     Summagraphics Corporation, as

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     amended, pursuant to which Lockheed Martin Corporation ("Lockheed Martin")
     will exchange 100% of the issued and outstanding Common Stock of CalComp
     Inc. for approximately 89.7% of the then-issued and outstanding Common
     Stock of the Corporation, Lockheed Martin will own shares of the
     outstanding Common Stock of the Corporation, which represents a controlling
     interest in the Corporation. As used herein, "Lockheed Martin" includes
     Lockheed Martin and each corporation, partnership, joint venture, limited
     liability company, association and other entity in which the Corporation
     beneficially owns (directly or indirectly) fifty percent (50%) or more of
     the outstanding common stock of such corporation or, if not a corporation,
     equity interests entitled to vote generally in the election of the
     governing body of such entity.  In anticipation that the Corporation and
     Lockheed Martin may engage in the same or similar activities or lines of
     business and have an interest in the same areas of corporate opportunities,
     and in recognition of (i) the benefits to be derived by the Corporation
     through its continued contractual, corporate and business relations with
     Lockheed Martin (including service of officers, directors and employees of
     Lockheed Martin as directors of the Corporation) and (ii) the difficulties
     attendant to any director, who desires and endeavors fully to satisfy such
     director's fiduciary duties, in determining the full scope of such duties
     in any particular situation, the provisions of this Article 9 are set forth
     to regulate, define and guide, to the extent permitted by law, the conduct
     of certain affairs of the Corporation as they may involve Lockheed Martin
     and its officers, directors and employees, and the powers, rights, duties
     and liabilities of the Corporation and its officers, directors, employees
     and stockholders in connection therewith; provided, however, except as
     expressly set forth herein, nothing contained in this Article 9 shall
     limit, restrict or relieve the powers, rights, duties and liabilities of
     the Corporation and its officers, directors, employees and stockholders.

          (b) To the fullest extent permitted by the General Corporation Law of
     the State of Delaware, except as Lockheed Martin may otherwise agree in
     writing, Lockheed Martin shall have the right to (i) engage in the same or
     similar business activities or lines of business as the Corporation and
     (ii) do business with any client or customer of the Corporation, and
     Lockheed Martin shall have no duty to refrain from engaging in such
     business activities or to refrain from doing business with such clients and
     customers.  To the fullest extent permitted by the General Corporation Law
     of the State of Delaware, neither Lockheed Martin nor any officer, director
     or employee thereof (except as provided in subparagraph (c)

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     of this Article 9) shall be liable to the Corporation or its stockholders
     for breach of any duty which is owed or may be owed to the Corporation by
     reason of any such activities of Lockheed Martin or of such person's
     participation therein.  To the fullest extent permitted by the General
     Corporation Law of the State of Delaware, in the event that Lockheed Martin
     acquires knowledge of a potential transaction or matter that may be a
     corporate opportunity for both Lockheed Martin and the Corporation, other
     than from the Corporation, Lockheed Martin shall have no duty to
     communicate or present such corporate opportunity to the Corporation and
     shall not be liable to the Corporation or its stockholders for breach of
     any duty as a stockholder of the Corporation by reason of the fact that
     Lockheed Martin pursues or acquires such corporate opportunity for itself,
     directs such corporate opportunity to another person or entity, or does not
     present such corporate opportunity to the Corporation.

          (c) In the event that a director, officer or employee of the
     Corporation who is also a director, officer or employee of Lockheed Martin
     acquires knowledge of a potential transaction or matter that may be a
     corporate opportunity for both the Corporation and Lockheed Martin, such
     director or officer of the Corporation shall act in good faith in a manner
     consistent with the following policy:

               (i)  a corporate opportunity offered to any person who is a
                    director, officer or employee of the Corporation and who is
                    also a director but not an officer or employee of Lockheed
                    Martin shall belong to the Corporation, unless such
                    opportunity is expressly offered to such person primarily in
                    his or her capacity as a director of Lockheed Martin, in
                    which case such opportunity shall belong to Lockheed Martin;

               (ii) a corporate opportunity offered to any person who is a
                    director but not an officer or employee of the Corporation
                    and who is also a director, officer or employee of Lockheed
                    Martin shall belong to Lockheed Martin, unless such
                    opportunity is expressly offered to such person primarily in
                    his or her capacity as a director of the Corporation or he
                    or she became aware of it in the course of the performance
                    of his or her duties on behalf of the Corporation, in which
                    case such opportunity shall belong to the Corporation; and

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              (iii) a corporate opportunity offered to any other person who is
                    either (A) an officer or employee of both the Corporation
                    and Lockheed Martin or (B) a director of both the
                    Corporation and Lockheed Martin (but an officer or employee
                    of neither the Corporation nor Lockheed Martin) shall belong
                    to Lockheed Martin or to the Corporation, as the case may
                    be, if such opportunity is expressly offered to such person
                    primarily in his or her capacity, or he or she became aware
                    of it in the course of the performance of his or her duties
                    on behalf of the Corporation, as an officer, employee or
                    director of Lockheed Martin or of the Corporation, as the
                    case may be; otherwise, such opportunity shall belong to
                    either Lockheed Martin or the Corporation as a majority of
                    the directors of the Corporation who are not officers or
                    employees of either Lockheed Martin or the Corporation or
                    directors of Lockheed Martin shall determine in their good
                    faith judgment, taking into account all the facts and
                    circumstances with respect to such opportunity.

          (d) For the purposes of this Article 9, "corporate opportunities"
     shall not include any business opportunities that the Corporation is not
     financially able to undertake, or that are, from their nature, not in the
     ordinary business of the Corporation or are of no practical advantage to it
     or that are ones in which the Corporation has no interest or reasonable
     expectancy.  In addition, "corporate opportunities" shall not include any
     transactions in which the Corporation or its subsidiaries are permitted to
     participate pursuant to any services agreement or any other agreement
     (which may be adopted, amended or repealed from time to time by the vote of
     a majority of the disinterested directors) between Lockheed Martin and the
     Corporation (each such agreement is referred to herein as a "Services
     Agreement"), it being acknowledged that the rights of the Corporation under
     any such Services Agreement shall be deemed for all purposes to be
     contractual rights and shall not be corporate opportunities of the
     Corporation for any purpose; provided, however, that the absence of any
     such Services Agreement, or the absence of any provisions in a Services
     Agreement relating to any particular transactions or types of transactions,
     shall not support any inferences or implications or have any effect
     whatsoever on transactions not explicitly covered by a Services Agreement.

          (e) Any person or entity that currently owns, hereafter purchases or
     hereafter otherwise acquires any interest in any

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     shares of capital stock of the Corporation shall be deemed to have notice
     of and to have consented to the provisions of this Article 9.

          (f) For purposes of this Article 9, the "Corporation" shall mean the
     Corporation and each corporation, partnership, joint venture, limited
     liability company, association and other entity in which the Corporation
     beneficially owns (directly or indirectly) fifty percent (50%) or more of
     the outstanding common stock of such corporation or, if not a corporation,
     equity interests entitled to vote generally in the election of the
     governing body of such entity.

          ARTICLE 10.  (a) In anticipation that (i) the Corporation and Lockheed
     Martin or its customers (or other persons acquiring products manufactured
     or distributed by Lockheed Martin) may enter into contracts or otherwise
     transact business with each other and that the Corporation may derive
     benefits therefrom and (ii) the Corporation may from time to time enter
     into contractual, corporate or business relations with one or more of its
     directors, or one or more corporations, partnerships, associations or other
     organizations in which one or more of its directors have a financial
     interest or are affiliated with (collectively "Related Entities"), the
     provisions of this Article 10 are set forth to regulate and guide certain
     contractual relations and other business relations of the Corporation as
     they may involve Lockheed Martin or its customers (or other persons
     acquiring products manufactured or distributed by Lockheed Martin), Related
     Entities and their respective officers and directors, and the powers,
     rights, duties and liabilities of the Corporation and its officers,
     directors and stockholders in connection therewith.  The provisions of this
     Article 10 are in addition to, and not in limitation of, the provisions of
     the General Corporation Law of the State of Delaware and the other
     provisions of this Fourth Amended and Restated Certificate of
     Incorporation.  Any contract or business relation that does not comply with
     procedures set forth in this Article 10 shall not by reason thereof be
     deemed void or voidable or result in any breach of any duty or the
     derivation of any improper personal benefit but shall be governed by the
     provisions of this Fourth Amended and Restated Certificate of
     Incorporation, the Bylaws of the Corporation, the General Corporation Law
     of the State of Delaware and other applicable law.

          (b) Directors of the Corporation who are also directors or officers of
     Lockheed Martin or any Related Entity may be counted in determining the
     presence of a quorum at a meeting of the Board of Directors or of a
     committee thereof that authorizes, approves or ratifies any contract,
     agreement, arrangement or transaction or any arrangements, guidelines or

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     standards.  Voting shares owned by Lockheed Martin, any Related Entities,
     or such interested party may be counted in determining the presence of a
     quorum at a meeting of stockholders that authorizes, approves or ratifies
     any contract, agreement, arrangement or transaction or any arrangements,
     guidelines or standards.

          (c) To the fullest extent permitted by law, Lockheed Martin shall not
     be liable to the Corporation or its stockholders for breach of any duty by
     reason of the fact that Lockheed Martin in good faith takes any action or
     exercises any rights or gives or withholds any consent in connection with
     any agreement or contract between Lockheed Martin and the Corporation.  No
     vote cast or other action taken by any person who is an officer, director
     or other representative of Lockheed Martin, which vote is cast or action is
     taken by such person in his or her capacity as a director of the
     Corporation, shall constitute an action of or the exercise of a right by or
     a consent of Lockheed Martin for the purpose of any such agreement or
     contract.

          (d) Any person or entity that currently owns, hereafter purchases or
     hereafter otherwise acquires any interest in any shares of capital stock of
     the Corporation shall be deemed to have notice of and to have consented to
     the provisions of this Article 10.

          (e) For purposes of this Article 10, any contract, agreement,
     arrangement or transaction with any corporation, partnership, joint
     venture, limited liability company, association or other entity in which
     the Corporation beneficially owns (directly or indirectly) fifty percent
     (50%) or more of the outstanding voting power, or with any officer or
     director thereof, shall be deemed to be a contract, agreement, arrangement
     or transaction with the Corporation.

          ARTICLE 11.  A director of this Corporation shall not be liable to the
     Corporation or its stockholders for monetary damages for breach of
     fiduciary duty as a director, except to the extent such exemption from
     liability or limitation thereof is not permitted under the General
     Corporation Law of the State of Delaware as the same exists or may
     hereafter be amended.  If the General Corporation Law of the State of
     Delaware is amended after the effective date of this Certificate of
     Incorporation to authorize corporate action further eliminating or limiting
     the personal liability of directors, then the liability of a director of
     the Corporation shall be eliminated or limited to the fullest extent
     permitted by the General Corporation Law of the State of Delaware, as so
     amended.

          Any repeal or modification of the foregoing paragraph shall not
     adversely affect any right or

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     protection of a director of the Corporation existing hereunder with respect
     to any act or omission occurring prior to such repeal or modification.

          ARTICLE 12.  The Corporation shall not be governed by the provisions
     of Section 203 of the General Corporation Law of the State of Delaware or
     by any similar law restricting business combinations with an Interested
     Stockholder, as defined in such Section 203.

          ARTICLE 13.  The Corporation reserves the right to amend or repeal any
     provision contained in this Fourth Amended and Restated Certificate of
     Incorporation, in the manner now or hereafter prescribed by statute, and
     all rights conferred upon a stockholder herein are granted subject to this
     reservation.

     IN WITNESS WHEREOF, Summagraphics Corporation has caused this certificate
to be signed by Michael S. Bennett, its duly authorized President and Chief
Executive Officer, and attested by Robert B. Sims, its duly authorized
Secretary, this 23rd day of July, 1996.


ATTEST:                                CALCOMP TECHNOLOGY, INC.


______________________________         By:___________________________
Robert B. Sims                            Michael S. Bennett
Secretary                                 President and Chief Executive
                                             Officer

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