Document:

Exhibit 10.37

                                    ADDENDUM
                                       TO
                          COMMON STOCK PURCHASE WARRANT
                             DATED DECEMBER 30, 2005

      This Addendum is executed by DataMetrics Corporation (the "Company") to
confirm certain terms with respect to the Common Stock Purchase Warrant dated
December 30, 2005 (the "Warrant") issued to SG DMTI CAPITAL LLC ("SGDMTI").

      WHEREAS, on December 30, 2005, as part or a restructuring of the Company's
capital structure and a financing by SGDMTI, the Company issued SGDMTI the
Warrant; and

      WHEREAS, the Warrant was exercisable to purchase 386,314,860 shares of the
Company's Common Stock, constituting 50 per cent of the Company's then
outstanding shares of Common Stock on a fully diluted basis, on or before
December 30, 2015 at an exercise price of $.01 per share, which exercise price
represented the par value per share of the Company's Common Stock, and

      WHEREAS, stockholders owning a majority of the Company's then outstanding
shares of Common Stock approved a one-for-30 reverse stock split (the "Reverse
Stock Split") of the Company on December 28, 2005, but such Reverse Stock Split
had not become effective as of the issuance of the Warrant as the Company was
required to distribute an information statement to the holders of its Common
Stock; and

      WHEREAS, the intent of the Company and SGDMTI as of the date of execution
of the Warrant, was that upon the effectiveness of the Reverse Stock Split, the
Warrant would be exercisable to purchase 12,877,162 shares of Common Stock for
$.01 per share, and

      WHEREAS, the Reverse Stock Split became effective on April 11, 2006, NOW,
THEREFORE, the Company hereby confirms that

1.    For value received and to accurately reflect the intent of the parties as
      of the date of the execution of the Warrant, SG DMTI CAPITAL LLC or any
      subsequent holder of the Warrant (the "Holder"), is entitled, subject to
      the terms set forth in the Warrant, to purchase from the Corporation from
      time to time at or before 5:00 p.m. New York City time on December 30,
      2015 that number of fully paid and nonassessable shares of Common Stock
      (the "Warrant Shares"), with a par value of $0.01 per share, of the
      Corporation as is equal to the Warrant Number (as hereinafter defined), at
      a purchase price per share of $0.01 (the "Purchase Price").

<PAGE>

2.    The "Warrant Number" shall mean the number of shares of Common Stock of
      the Company for which the Warrant may be exercised, which initially is
      12,877,162 and is subject to adjustment as provided thereof.

3.    The terms of the Warrant are otherwise unchanged.

4.    Capitalized terms not otherwise defined in this Addendum shall have the
      meanings ascribed to them in the Warrant. The undersigned, on behalf of
      the Company, has executed this Addendum as of February 8, 2007.

                                                     DATAMETRICS CORPORATION

                                                     By: Daniel Bertram

                                                        Daniel Bertram,
                                                        Chief Executive OfficerExhibit 10.38

                                 ALLONGE TO NOTE

      This Allonge to that certain Secured Promissory Note in the original
principal amount of $500,000, dated December 30, 2005, made by Datametrics
Corporation, a Delaware corporation, as Borrower, to and for the benefit of SG
DMTI Capital LLC, as Payee (the "Original Note");

      The parties hereto agree that the Maturity Date (as such term is defined
in the Original Note) shall be extended for an additional twelve (12) months,
from December 31, 2006 (as stated in the Original Note) until December 31, 2007.
This Allonge shall constitute an addendum to and an integral part of the
Original Note and shall be physically attached thereto. The Original Note cannot
be transferred without this Allonge. The parties hereto acknowledge and agree
that, except as explicitly modified herein, Payee has not waived any of its
rights with respect to the Original Note. In all other respects, the Original
Note is hereby ratified and confirmed.

Dated:  February 8, 2007

                                                DATAMETRICS CORPORATION

                                                By: Daniel Bertram
                                                Name: Daniel Bertram
                                                Title: Chief Executive Officer

                                                SG DMTI Capital LLC

                                                By: SG Phoenix Ventures LLC
                                                its Managing Member

                                                By: Philip S. Sassower
                                                Name: Philip S. Sassower
                                                Title: Member

                                                By: Andrea Goren
                                                Name: Andrea Goren
                                                Title: MemberExhibit 10.1

                                                                February 7, 2007

                          2007 EXECUTIVE INCENTIVE PLAN

PURPOSE
-------

The 2007 Executive Incentive Plan of Dayton Superior Corporation (the "Company")
is established to encourage the achievement of defined operational goals that
contribute directly to the profits of the Company and to recognize employees
whose performance exceeds normal expectations or requirements for their
positions.

DEFINITIONS
-----------

--   Plan means this 2007 Executive Incentive Plan of the Company.

--   Compensation Committee means the Compensation Committee established by the
     Board of Directors of the Company.

--   Participant means an employee selected to participate in the Plan.

--   Year means a calendar year.

ADMINISTRATION
--------------

Participants in the Plan will have a bonus opportunity, which will be a
percentage of their base salary. The percentage will vary by position and will
reflect the level of responsibility of the individual Participant and will
include market-based compensation comparisons. The percentage opportunity will
be recommended by the President & Chief Executive Officer, subject to
Compensation Committee approval. The Plan will be based upon the achievement of
various financial goals approved by the Compensation Committee. The financial
goals must be met before any bonuses will be awarded.

The Compensation Committee shall make all determinations of the financial
targets required for the administration of the Plan. The Compensation Committee
may also make such adjustment, including the determination as to which unusual
or non-recurring items to include or exclude, as it, in its sole discretion,
deems appropriate to properly reflect the Company's financial results.

The Compensation Committee must approve all Participants in the Plan and the
achievement of the specified financial goals for distribution of awards.

ELIGIBILITY & COMPONENT ALLOCATION
----------------------------------

Plan Participants must be employed with the Company at the time of distribution.
If a Plan Participant leaves prior to the payment incentive bonuses, the
Participant will forfeit any bonus amount.

Payments will be made by March 31st of the year following the Plan year, subject
to completion of the annual audit of the Company's financial statements.

Eligibility for participation in the Plan will be reviewed each year. For 2007,
Plan participation eligibility and allocation are established for the executive
group as follows:

<TABLE>
<CAPTION>

                    ------------------------------------------------------------
                                      % of Salary At 100% of Target
                    ------------------------------------------------------------
                    Chief Executive   Executive Vice   Vice President   Director
                        Officer         President
--------------------------------------------------------------------------------
            <S>            <C>             <C>             <C>             <C>
      Company EBIT*        60%             45%              30%            20%
--------------------------------------------------------------------------------
 Company Cash Flow*        40%             30%              20%            15%
--------------------------------------------------------------------------------
              Total       100%             75%              50%            35%
--------------------------------------------------------------------------------

                    ------------------------------------------------------------
                                      % of Salary Above 100% of Target
--------------------------------------------------------------------------------
For Each $1 Million
    Company EBIT           10%            7.5%               5%           3.5%
   Exceeding Target
--------------------------------------------------------------------------------

</TABLE>

LIMITATIONS
-----------

The Plan is not to be construed as providing a guaranteed or minimum payment, or
as constituting a contract of employment. No rights in the Plan shall be deemed
to accrue to any Participant, and no Participant or other person shall, because
of the Plan, acquire any right to an accounting or to examine the books or
affairs of the Company.

The Compensation Committee may at any time terminate the Plan or effect such
amendments thereto as it shall deem advisable and in the best interest of the
Company; provided, that no such termination or amendment shall affect or impair
any rights of such Participant with respect to the year in which such
termination or amendment is made.

PERFORMANCE MEASURES
--------------------

The threshold for payment is 90% of the target scaled to 100%, using the EBIT
and cash flow targets approved by the Compensation Committee.

At the 90% threshold, the Plan will pay out at 50% of the target bonus. If the
Company does not achieve the threshold, any bonuses paid will be at the sole
discretion of the Compensation Committee.

For each $1 million of EBIT above target, the Program will pay an additional
bonus amount as a % of salary.

* As defined by the Compensation Committee

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