LETTER (Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A001500010015-0
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: February 3, 2005
• Sequence Number: 15
• Publication Date: September 21, 1962
• Content Type: LETTER

Approved For Release 2005/02/17 : CIA-RDP78BO4770A001500010015-0
Enclosed is a design concept of the twin path
light table prepared by
incorporat-
ing your suggestions and comments. As is
apparent, to accomodate the large 1, 000'
reels, he has made some rather drastic modi-
fications. We would appreciate your review
and comments. Also enclosed are comments
by John.
Please let us hear from you soon.
Declass Review by NGA.
Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
 Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
September 21, 1962
The first light table was shipped Railway Express on Wednesday,
September 19. You will find that the G. F. E. rolls and arms
are not included. This is for the following reason.
At the end of assembly of the first unit, it was found that
contrary to original design the location of Apel arms could be
changed to your greater advantage with some minor modifications
to the table; and, also, that the guide rolls and shaft could
be utilized without modification with some changes to the light
box. Therefore, in the interest of your utilization of arms and
rolls without change, I made the table changes at the expense of
late shipment, and am keeping the sets of arms and rolls until
all retrofit on the balance of eleven boxes is compld e. They
will be shipped attached to a subsequent box.
Enclosed is a picture of the box with arms, rolls and microscope
attached. The additional arm and frame with reticle glass is a
checking and mensuration device we use in inspection of the table
and also for counting purposes in P. I. work for raisin trays in our
survey work for the Department of Agriculture. This attachment is,
of course, extraneous as far as you are concerned.
You will find two sets of adapter bushings in an envelope
which, upon insertion into the ends of the G. F. E. guide roll
shaft, will permit the socket head pivot screws to fit the shaft
when adjusted with an Allen wrench. The two lengths of bushings
are included in the event that the rods differ in depth.
You will also find an adapter block attached to the top of
the microscope pedestal with a socket head screw. Remove this
block from the locating pins and attach to =Stand 31-26-90
with screws from stand inserted through bottom (counterbored) side.
Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
 Approved For Release 2005/02/17 : CIA-RDP78B04770A001500010015-0
-2- September 21, 1962
Replace on pins, raise rack and insert and tighten down socket
head screw with Allen wrench. Put arm with pin in stand and
microscope in hole in arm. Tighten tension screws to suit.
Screw brass rod into pivot block on pedestal with Teflon cushioned
head down. Block up table to do this latter assembly.
I shall be on vacation from October 1 to October 8 inclusive.
However, I shall call when I get back to see how everything is
going.
You
can understand that the G.
F.
E. retrofit may make
the
delivery
However,
on October 1 of the balance
notice will be given.
of
tables a bit late.
We hope everything will be well and the table meets your
needs.
JSM: gg
Approved For Release 2005/02/17 : CIA-RDP78B04770A001500010015-0
 AM,
Approved For Relez
ILLEGIB
STAT
a. Design and fabricate a light table suitable for mounting the following
government furnished equipment: A standard stand (cat. #
31-26-95, without base), 360? rotatable arm eat. ,- 6-00) and Zoom
power pod (cat. # 53-70-02, Model 2), Aeronautical Photographic Experimental
Laboratory film reel brackets and segmented nylon rollers.
STAT
STAT
b. Provide a slide between tl.e table and 1 s_tan~i to allow STAT
the microscope to be quicklY.Positioned?over the viewing `
~ o area of the light
box.
c. Provide a transverse feed screw and slide to move the light box in
relation to the microscope a minimum of lz" each side of the table centerline.
d. Provide a rotational moveilent of the whole light table on its base
minimum of 90o in each direction from the nominal position.
e. Provide a tilting mechanism with integral braking safety device to allow
tilting the light table and microscope through a minimum range of 0? to 95?
of inclination toward operator.
f. Provide a light table with at least 92" on a side of lighted surface
but no more than 11'" on a side. The viewing surface of the table is to be
glass with an opalescent plastic diffuser immediately beneath the glass
surface.
g. The design goat for table lighting should be sufficient to view trans-
parencies with 2.0 density comfortably through a stanard zoom microscope
pod at 60X magnification. Switc,l.es or voltage regulation device:; are to be
provided for at least 4 levels of illumination over the entire viewing
surface at least 2 levels in each of the four quadrents of the viewing
surface.
1. Provide mounting arrangmentj and necessary hardware to mount government
iurnislced accessory equipment, listed in para. 2. on the light table at the
ct.stomer's facility.
i. ][eight of the table and over-all dimensions of the base are to be held
to a minimum commensurate with good engineering design and proper balance in
all possible positions expected in an operational enviroru:ment.
Government Furnished Equipment
The Government shall furnish the Contractor for use in performance of this
contract the following Government Furnished Equipment:
One set of APEL brackets and two sets of
for fitting on the nylon prototype models.
APEL bracl?.ets and nylon rollers and
installation on the light tables under
standard stands and zoom
nylon rollers
nylon rollers for
1 above. Also
power pods will be
furnished the Contractor in the performance
of this Contract,
STAT
STAT
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 Aft Aft
Approved For Release 2005/02/17 : CIA-RDP78B04770A001500010015-0
November 14, 1962
Your letter of 29 October received, preceded by the lists
of objections. Your criticisms and suggestions are appreciated.
We were disappointed to a degree but have given a lot of thought
to ways of functionally meeting the objections.
Enclosed are three sketches. Number 1 shows your sugges-
tion carried as far as your notes indicate. I believe that the
cantalever action on the plates when the microscope is extended
would entail considerable binding and require an extra hand to
hold up the microscope while tightening the screws. The micro-
scope at seven pounds (including ring) exerts a 35-pound force
when extended five inches, which is considerable on two screws
and bearing load washers as you can see from the sketch diagram.
Sketch number 2 suggests a more rigid scheme but does not
provide for lateral motion (not requested in original Work
Statement).
Sketch number 3 suggests a tilt mechanism scheme which we
arrived at prior to receiving your letter. You will note that
the second member provides a fulcrum for the prime moving link,
thus reducing the screw load.
Since in our mind there are some further minor questions
on rotation and lighting, and since we feel that we should be
in complete agreement on all design features of the instrument
as well as delivery dates and additional costs which might occur,
we feel that it would be most advantageous if you could (as you
suggest) spend a couple of days at our facility at your earliest
convenience before we resume work on the instrument.
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 Adk
A&
2005/02/17 : CIA-RDP78BO477OA001500010015-0
-2- November 14, 1962
We are giving notification through normal channels that
a time extension will be requested subsequent to our mutual
agreement as to the disposition of the design changes requested.
JSM: gg
Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
 p ON R 3 X2005 C X4 500010015-0
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Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
 Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0
Approved For Release 2005/02/17 : CIA-RDP78BO477OA001500010015-0