Document:

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                                                                 EXHIBIT 10(xii)

                             [SPX CORPORATION LOGO]

                                THOMAS J. RIORDAN

                               STOCK OPTION AWARD

                  THIS AGREEMENT is made on and as of December 10, 1997, by and
         between SPX CORPORATION, a Delaware Corporation ("SPX" or the
         "Company") and THOMAS J. RIORDAN ("Executive").

1.   Grant of Options. In recognition of his performance as Vice President of
     the Corporation and President of the OETEG and ATEG businesses, and as an
     inducement to his continuing in the employ of the Company, SPX hereby
     grants to Executive Options to purchase 100,000 Shares of the Company's
     Common Stock, par value $10.00 ("Common Stock") at Option Prices set forth
     below and in the manner and subject to the terms and conditions hereinafter
     provided:

<TABLE>
<CAPTION>

                      Number of Shares                 Option Price Per Share
                      ----------------                 ----------------------
<S>                                                   <C>
                          50,000                              $75.00
                          50,000                              $90.00
</TABLE>

         These Options are granted to Executive by the Board of Directors of the
         Company and are in addition to the stock options granted to Executive
         under the Company's 1992 Stock Compensation Plan. The Options granted
         under this Agreement are outside of and not granted pursuant to said
         Plan. To the extent that shares of Common Stock are held by the Company
         as treasury shares at the time that the Options (or any portion
         thereof) are exercised, the Company will use treasury shares as the
         source of the Common Stock issued to the Executive in connection with
         such exercise. The Board of Directors has delegated to its Compensation
         Committee (the "Committee") the authority to make such determinations
         and interpretations of this Agreement as it deems necessary and
         appropriate to carry out its intent and terms.

2.       Time of Exercise of Options/Vesting. The Options granted hereunder may
         be exercised in whole or in part at any time and from time to time on
         or after the Vesting Date and prior to or on the Expiration Date. The
         Vesting Date is the earliest of: (i) December 10, 2002, (ii) the date
         on which a "change-of-control" of the Company occurs as defined in the
         Executive's "Change-of-Control Executive Severance Agreement" dated
         February 26, 1996, or (iii) the date on which Executive's employment
         with the Company terminates by reason of his disability or death. The
         Expiration Date is December 9, 2007, except as otherwise provided
         herein.

<PAGE>   2

3.       Manner of Exercise. The Options may be exercised by written notice
         which shall:

         a.       State the election to exercise the Options and the number of
                  shares and Option Price in respect of which they are being
                  exercised;

         b.       Be signed by Executive or such other person or persons
                  entitled to exercise the Options;

         c.       Be in writing and delivered to SPX's Secretary;

         d.       Be accompanied by payment in full of the Option Price for the
                  shares to be purchased. Payment may be made by: (i) check,
                  bank draft, money order or other cash payment, or (ii)
                  delivery (or deemed delivery by attestation) of previously
                  acquired shares of Common Stock with a fair market value as of
                  the exercise date equal to the aggregate Option Price for the
                  shares to be purchased (or a combination of (i) and (ii)). The
                  fair market value of the Common Stock for this purpose shall
                  be the closing price of a share of Common Stock as reported in
                  the "NYSE-Composite Transactions" section of the Midwest
                  Edition of The Wall Street Journal for the exercise date or,
                  if no prices are quoted for such date, on the next preceding
                  date on which such prices of Common Stock are so quoted;

         e.       Be accompanied by payment of any Federal, state or local taxes
                  required by law to be withheld by the Company with respect to
                  the exercise of the Options unless other satisfactory
                  arrangements are made between the Company and the Executive to
                  satisfy such withholding obligations; and

         f.       Unless a Registration Statement under the Securities Act of
                  1933 is in effect with respect to the shares of Common Stock
                  to be issued, contain a representation by the Executive or
                  other person or persons entitled to exercise the Options that
                  the shares of Common Stock are being acquired for investment
                  and with no present intention of selling or transferring them
                  and that the person acquiring them will not sell or otherwise
                  transfer the shares except in compliance with all applicable
                  securities laws and requirements of any stock exchange upon
                  which the shares may then be listed.

         If the Options shall have been exercised in full, this Agreement shall
         be canceled and retained by the Company, otherwise it shall be
         appropriately endorsed to reflect partial exercise and returned to the
         Executive or other person entitled to exercise the Options.

4.       Termination of Employment for Disability or Death. If without having
         fully exercised the Options granted hereunder, the Executive's
         employment with the Company is terminated by reason of disability, then
         the Vesting Date shall be the date of his termination and the
         Expiration Date shall be the date 90 days after termination. If without
         having fully exercised the Options granted hereunder, the Executive's
         employment with the Company is terminated by reason of death, the
         Options granted

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         hereunder shall be fully vested and shall be exercisable by the person
         or persons who shall have acquired the Executive's rights hereunder by
         will or the laws of descent and distribution and the Expiration Date
         shall be the earlier of: (i) the date which is twelve months following
         the date of the Executive's death, or (ii) December 9, 2007.

5.       Other Termination of Employment. If the Executive's employment with the
         Company is terminated for reasons other than death or disability and
         prior to the Vesting Date, this Agreement and the Executive's Options
         shall terminate. If the Executive's employment with the Company is
         terminated for reasons other than death or disability and subsequent to
         the Vesting Date, then the Expiration Date shall be the earlier of: (i)
         the date which is 90 days following the date of termination of his
         employment, or (ii) December 9, 2007.

6.       Rights Prior to Exercise of Option. The Options may not be sold,
         transferred, pledged, assigned or otherwise alienated or hypothecated,
         other than by will or by the laws of descent and distribution. The
         Options shall be exercisable during the Executive's lifetime only by
         him. Executive shall not have any rights as a stockholder with respect
         to the shares of Common Stock optioned hereunder until exercise of the
         Options and delivery of the shares as herein provided.

7.       Adjustment in the Event of Changes Affecting Common Stock. In the event
         of any change in the outstanding shares of Common Stock that occurs by
         reason of a stock dividend or split, recapitalization, merger,
         consolidation, combination, exchange of shares, or other similar
         corporate change, the aggregate number of shares of Common Stock
         subject to the Options, and the Option Prices, shall be appropriately
         adjusted by the Committee, whose reasonable determination shall be
         conclusive, provided, however, that fractional shares shall be rounded
         to the nearest whole share.

8.       No Contract of Employment. Nothing contained in this Agreement shall be
         construed as a contract of employment between SPX and Executive, or as
         creating a right of Executive to be continued in the employment of SPX,
         or as a limitation of SPX's right to discharge Executive with or
         without cause. Except as expressly provided herein, this Agreement
         shall not be construed as a term or condition of his employment and, in
         particular, it shall neither confer upon Executive any additional
         rights or privileges relative to his existing terms and conditions of
         employment nor shall it entitle Executive to additional compensation or
         damages upon any termination of employment.

9.       Binding Effect. This Agreement shall inure to the benefit of and be
         binding upon the parties hereto and their respective executors,
         administrators, legal representatives, successors and assigns. This
         Agreement may be amended only by further written agreement of the
         Company and Executive.

10.      Governing Law. This Agreement shall be construed in accordance with and
         governed by the laws of the State of Michigan.

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<PAGE>   4

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year first above written.

           SPX CORPORATION                EXECUTIVE

By:      /s/ John B. Blystone             /s/ Thomas J. Riordan
   --------------------------------       --------------------------------------
             John B. Blystone                 THOMAS J. RIORDAN

Title:  Chairman, President & CEO

                                       4<PAGE>   1

                                                                EXHIBIT 10(xiii)

                             [SPX CORPORATION LOGO]

                                JOHN B. BLYSTONE

                               STOCK OPTION AWARD

                  THIS AGREEMENT is made on and as of February 26, 1997, by and
         between SPX CORPORATION, a Delaware Corporation ("SPX" or the
         "Company") and JOHN B. BLYSTONE ("Executive").

1.   Grant of Options. In recognition of his performance as Chairman, President,
     and Chief Executive Officer and pursuant to the terms of his Employment
     Agreement made and entered into as of January 1, 1997, and executed on
     February 25, 1997, (the "Employment Agreement"), SPX hereby grants to
     Executive Options to purchase 1,000,000 Shares of the Company's Common
     Stock, par value $10.00 ("Common Stock") at Option Prices set forth below
     and in the manner and subject to the terms and conditions hereinafter
     provided:

<TABLE>
<CAPTION>

                      Number of Shares                 Option Price Per Share
                      ----------------                 ----------------------
<S>                                                   <C>
                          250,000                              $45.75
                          250,000                              $60.00
                          250,000                              $75.00
                          250,000                              $90.00
</TABLE>

These Options are granted to Executive by the Board of Directors of the Company
         pursuant to the terms of the Employment Agreement and are in addition
         to the stock options granted to Executive under the Company's 1992
         Stock Compensation Plan. The Options granted under this Agreement are
         outside of and not granted pursuant to said Plan. To the extent that
         shares of Common Stock are held by the Company as treasury shares at
         the time that the Options (or any portion thereof) are exercised, the
         Company will use treasury shares as the source of the Common Stock
         issued to the Executive in connection with such exercise. The Board of
         Directors has delegated to its Compensation Committee (the "Committee")
         the authority to make such determinations and interpretations of this
         Agreement as it deems necessary and appropriate to carry out its intent
         and terms.

2.       Time of Exercise of Options/Vesting. The Options granted hereunder may
         be exercised in whole or in part at any time and from time to time on
         or after the Vesting Date and prior to or on the Expiration Date. The
         Vesting Date is the earliest of: (i) January 1, 2002, (ii) the date on
         which a "Change of Control" of the Company occurs as defined in the
         Employment Agreement, or (iii) the Date of Termination as defined in
         the Employment Agreement in the event the Executive's employment with
         the Company is terminated by reason of his death or disability or by
         the Company other than for "Cause" or by the resignation of the
         Executive for "Good Reason" as those terms are defined in the
         Employment Agreement. The Expiration Date is the earlier of: (i)
         December 31, 2006, or (ii) the date which is two years after the Date
         of Termination as defined in the Employment Agreement. The Options
         granted hereunder are forfeited in the event the

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         Executive's employment is terminated by reason of his Discharge For
         Cause or resignation without Good Reason prior to the Vesting Date.

3.       Manner of Exercise. The Options may be exercised by written notice
         which shall:

         a.       State the election to exercise the Options and the number of
                  shares and Option Price in respect of which they are being
                  exercised;

         b.       Be signed by Executive or such other person or persons
                  entitled to exercise the Options;

         c.       Be in writing and delivered to SPX's Secretary;

         d.       Be accompanied by payment in full of the Option Price for the
                  shares to be purchased. Payment may be made by: (i) check,
                  bank draft, money order or other cash payment, or (ii)
                  delivery (or deemed delivery by attestation) of previously
                  acquired shares of Common Stock with a fair market value as of
                  the exercise date equal to the aggregate Option Price for the
                  shares to be purchased (or a combination of (i) and (ii)). The
                  fair market value of the Common Stock for this purpose shall
                  be the closing price of a share of Common Stock as reported in
                  the "NYSE-Composite Transactions" section of the Midwest
                  Edition of The Wall Street Journal for the exercise date or,
                  if no prices are quoted for such date, on the next preceding
                  date on which such prices of Common Stock are so quoted;

         e.       Be accompanied by payment of any Federal, state or local taxes
                  required by law to be withheld by the Company with respect to
                  the exercise of the Options unless other satisfactory
                  arrangements are made between the Company and the Executive to
                  satisfy such withholding obligations; and

         f.       Unless a Registration Statement under the Securities Act of
                  1933 is in effect with respect to the shares of Common Stock
                  to be issued, contain a representation by the Executive or
                  other person or persons entitled to exercise the Options that
                  the shares of Common Stock are being acquired for investment
                  and with no present intention of selling or transferring them
                  and that the person acquiring them will not sell or otherwise
                  transfer the shares except in compliance with all applicable
                  securities laws and requirements of any stock exchange upon
                  which the shares may then be listed.

If the Options shall have been exercised in full, this Agreement shall be
         canceled and retained by the Company, otherwise it shall be
         appropriately endorsed to reflect partial exercise and returned to the
         Executive or other person entitled to exercise the Options.

4.       Rights Prior to Exercise of Option. The Options may not be sold,
         transferred, pledged, assigned or otherwise alienated or hypothecated,
         other than by will or by the laws of descent and distribution. The
         Options shall be exercisable during the Executive's lifetime only by
         him. If without having fully exercised the Options granted hereunder,

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<PAGE>   3

         the Executive dies, the Options granted hereunder shall be exercisable
         by the person or persons who shall have acquired the Executive's rights
         hereunder by will or the laws of descent and distribution and may be
         exercised for a period ending on the Expiration Date as set forth in
         Paragraph 2 above. Executive shall not have any rights as a stockholder
         with respect to the shares of Common Stock optioned hereunder until
         exercise of the Options and delivery of the shares as herein provided.

5.       Adjustment in Event of Changes Affecting Common Stock. In the event of
         any change in the outstanding shares of Common Stock that occurs by
         reason of a stock dividend or split, recapitalization, merger,
         consolidation, combination, exchange of shares, or other similar
         corporate change, the aggregate number of shares of Common Stock
         subject to the Options, and the Option Prices, shall be appropriately
         adjusted by the Committee, whose reasonable determination shall be
         conclusive, provided, however, that fractional shares shall be rounded
         to the nearest whole share.

6.       No Contract of Employment. Nothing contained in this Agreement shall be
         construed as a contract of employment between SPX and Executive, or as
         creating a right of Executive to be continued in the employment of SPX,
         or as a limitation of SPX's right to discharge Executive with or
         without cause, such rights being governed exclusively by the Employment
         Agreement.

7.       Binding Effect. This Agreement shall inure to the benefit of and be
         binding upon the parties hereto and their respective executors,
         administrators, legal representatives, successors and assigns. This
         Agreement may be amended only by further written agreement of the
         Company and Executive.

8.       Governing Law. This Agreement shall be construed in accordance with and
         governed by the laws of the State of Michigan.

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<PAGE>   4

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the day and year first above written.

          SPX CORPORATION                               EXECUTIVE

By:    /s/ Christopher J. Kearney            /s/ John B. Blystone
   ---------------------------------         -----------------------------------
           Christopher J. Kearney                John B. Blystone

Title:   Vice President, Secretary and
         General Counsel

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