(Sanitized) PROPOSAL NO. AX5-8170

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002500020035-6
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: April 27, 2005
• Sequence Number: 35
• Publication Date: March 16, 1966
• Content Type: LETTER

Approved For Release 2005/06/06 : CIA-RDP78BO47 OA002500020035-6
16 M a
C; W;, 66-301
P: AXS-9170
P. 0. x 678$
Faft laic Station
'8 !> n, D.X.
STAT A
STAT 1j+:
STAT Gentlemen:
two, test et
STAT Attachments
tro
anti
. 5-8110
Dr awing No, L-200-100-756
P ue in With the
X00-1?10 -755, at ad
8 qu vd in to Wowing to t ty
STAT
25 ea, i
Soon.
100 .
20008.
300 .
400 .
28 we .v,
32 vmek.,~s
42 vmeks
2
$2 weoke
A Wale optical and cMnleal tootling aka of
first quantity carder Placed under this quotation; fut
subject to this c 'ge. All prices quoted arm f.o.b. OW
tome are 30 daps not.
4U tppik eb to STAT
will ors Wt be
iactt STAT
Declass Review by NGA.
STAT
Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500020035-6
in tantitie 0
 'STAT
Approved For Release 2005/06/I
6: CIA-RDP78B04770AG02500020035-6
-2- 16 March 1966
It is re r that any results rar pmvide for qwWass tats in accorc
with the Armed 6. s Procurement ReNlation. This p penal will remain to of ct and
be subject to acoaptame for a period of 46 days from this date,
we sal pleased to di mss this quotation to detail with your techatcal and edrnini..
rte ves#. at TW convenience . We welcome (Glue additional oppvr
STAT
to make r cilitIas available for your requimments.
'a,
Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500020035-6
 Approved Fo0lease 2005/06/06: CIA-RDP78BO47?002500020035-6
PROPOSED TEST PROCEDURE
FOR
WIDE SPAN RHOMBOID
PURPOSE:
To describe in specific detal3 a method of measuring transmission (light
efficiency) to assure correlation between customer and vendor inspection
agencies,
EQUIPMENT USED:
1 ea. Zoom 95 Stereoscope Stand
1 ea, C ?l1imato
1 ea, D ensicron
1 ea, Dynametex
1 ea, Entrance pars are o
1 ea, Eye Relief Adaptor
GENERAL-.
Transmission, in percent,, is measured as-,
T output light intensity x 100
put g n&- y
where the Input light is parallel (ova or nears) light from a tungsten source
and entering the Zoom 70 Stereoscope eyepiece through an aperture equal to
the diameter of the papillary spot. The input light intensity is a measure of
my the light allowed through the aperture and prior to its entrance into the
Zoom 70 eyepiece, The output light intensity is a measure of that light pass-
Ing through the optical system at a point where the exit light bundle is equal
to the diameter of the entrance aperture,
{,Note: Experimentation has Indicated that no significant difference in recorded
vransmission readings is observed when the output measurement is made at
her than this position. This is true, however, only when the area of the exit
light bundle is less than the sensitive area of the photoelectric probe,D
PROCEDURE:
Determination of the diameter of the pupillary spot can be made by placing a
dynameter on the Zoom 70 eyepiece and zhuminating the base of the Zoom 95
staff, By focusing on the observed light spot the diameter of this light spot
can be read directly from the dynameter scale, It is this measurement which
determines the diameter of the aperture to be used,
Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500020035-6
 Approved Fo.lease 2005/06/06: CIA-RDP78BO47-0002500020035-6
-2-
An eye relief adapter can be made by utilizing the dynameter as above and
measuring the distance from the eyepiece with a depth micrometer. it is
essential that the collimated light and aperture be placed at the exact eye
relief point,
Measurement of the input light intensity is made by placing the collimated
light source and aperture over the photoelectric probe and maximizing the
reading. if a 0100 scale is used, this reading may be set to 100 thus
allowing a direct reading in percent -transmission.
As indicated above, the exit light intensity is measured by placing the
collimated light source and aperture on the eyepiece eye relief adapter.
The photoelectric probe is then placed in the field below the rhomboid
assembly where the diameter of the exit light bundle is equal to the
aperture diameter. This intensity value is then c culated as a percent
of the input light intensity reading or read directly on the scale.
10/6166
Approved For Release 2005/06/06 : CIA-RDP78BO477OA002500020035-6