REPORT ON PRE - SHIPMENT INSPECTION OF PRECISION 3X-6X-12X ENLARGER

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04747A000500010029-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 28, 2016
• Document Release Date: May 2, 2001
• Sequence Number: 29
• Publication Date: August 29, 1963
• Content Type: MF

Approved For Release 2001/07/30 : CIA-RDP78BO4747A000500010029-2
0
29 August 1963
MEMORANDUM FOR: Assistant for Plans and Development
SUBJECT Report on Pre-Shipment Inspection of Precision 3X-6X-12X
Enlarger
THROUGH : Chief, Development Branch
1. The subject enlarger was desi
25X1A
25X1A
25X1A
25X1A
25X1A
unaer contract dated 27 June 1962. Pre-shipment inspection of
the enlarger was ma. e on the dates of 22 and 23 August 1963.
2. The initial contract price was in the amount of 2?X1A
letters of 27 May 1963; 25 June 1963 and 19 July 1963, overrun requests were
submitted but not yet granted, that would raise the total contract price
to These overrun requests are the subject of a. separate memo-
randum of this same date.
3. Purpose of Enlarger Development - The prime purpose for development
of the subject enlarger was to satisfy a. requirement for an on-axis* precision
photographic enlarging capability in the range below that provided by the
19X-20X-40X precision enlarger.
4. Enlarger Description:
Components - The enlarger is designed in a. vertical configuration
with a capability of printing out a. 70mm square negative area at all
settings. Its principle components are:
a. a. reinforced sheet-steel base with five (5) legs.
b. a thick-walled stainless steel vertical tube of four (4)
inch diameter.
c. a, horizontal support arm moveably attached to the verti-
cal tube.
d. an enlarger head mounted on the horizontal support arm,
with a remote exhaust fan.
e. a, remote control console
f. a. vacuum easel with remote pump
g. a drive unit for vertical motions.
All of the above except items (d) and (f) are standard units employed
in the
M EM Model 1088M, 35mm Microfilm Camera..
Each wa.s modified to some extent.
The only in-house precision enlarger other than _ 10-20-40X unit is the
VG-l. Its range however is .75 to only 7 diameters. Furthermore, en-
largements from targets at the edge of film frames are off-axis and project
off the easel. Hence the unit, although of high quality, is limited to this
extent.
Declass Review by NIMA / DoD n:;, Approved For Release 2001/07/30 : CIA-RDP78BO4747A000500010029-2 Excliidld fire, aatematic
uv Ana 71d
f.. _ k? ~! cft011
 Approved For Release 2001/07/30 : CIA RDP78B04747A000500010029-2
New
25X1A
Enlarger Head - The enlarger head is of box-like rectangular con-
figuration and is constructed of aluminum plates and sheets. It employs
a. condenser system with folded optics, a G.F.E. 105mm
lens, and is provided with four interchangeable and focusable light
sources. These are:
a. 100 watt Osram (Pinpoint)
b. 85 watt G.E. UV
c. 75 watt Projection
d. 500 watt projection
Cooling of the light sources is accomplished effectively by a remote air
blower through a. flexible tube to the lamp house.
Focusing - Focusing is designed to be autofocus by means of a. long
cam attached to the vertical tube and interconnected to the lens carriage
by means of a. roller arm and a. coarse rack and gear segment. Focusing
can only be accomplished from the console. Stops are provided at 3X,
6X and 11 3/4X enlargement. A steel tape enlargement scale is provided
on the vertical column.
Vacuum Easel - The easel is a 42 x 42 inch square sheet of semi-rigid
material approximately 5/8 inch thick with five (5) 3/16 inch wide air
vacuum channels, the smallest being 10 x 10 inches. Each channel is
separately controllable through solenoid valves operated from the control
console. Vacuum is provided by a simple remote 1/3 h.p. pump with no
accumulator tank. The easel is supported from the enlarger base by
fourteen (14) adjustable bolts intended to facilitate adjustment of the
easel surface to flatness.
5. Inspection - The inspection was conducted with full consideration that
the subject enlarger was intended to fulfill a. specific requirement in an
exploitation community where precision and quality of results cannot be compro-
mised. It was expected that the highest quality of design, engineering and
workmanship should be reflected in the unit. The inspection and tests were
limited by the time available and by the lack of test facilities at the
contractor's plant.
6. Inspection Findings:
a.. Fixed Stops. Fixed 3X - 6X - 11 3/4X stops provided were of no
value because the stopping point was never the same. Design of the
stopping mechanism M standard for other equipment) could never pro-
vide a consistent stopping point. stated that the system
employed could not be adjusted to provide accurate stops.
b. Enlarging Scale Tape. The scale provided for indication of
the degree of enlargement and its pointer were not accurate. An
operator could never be sure of the exact enlargement.
Approved For Release 2001/07/30 : CIA-RDP78BO4747A000500010029-2