INSTRUMENT FOR MEASURING THE THICKNESS OF PASTE USED ON THE INSIDE OF ICONOSCOPE TUBES

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A000900720006-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 15, 2016
• Document Release Date: January 29, 2002
• Sequence Number: 6
• Publication Date: April 29, 1953
• Content Type: REPORT

State Dept. review Ctf wa or Release 2003/10/01 : CIA-RDP80-0081 OA000900720006-7
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
This Document contains information affecting the Na-
tional Defense of the United States, within the mean-
ing of Title 18, Sections 793 and 794, of the U.S. Code, as
amended. Its transmission or revelation of its contents
to or receipt by an unauthorized person is prohibited
by law. The reproduction of this form is prohibited.
SEC
SECURITY 1 'RMATION
COUNTRY
SUBJECT
USSR,(Moscow Oblast)
Instrument for Measuring the Thickness
REPORT NO.
DATE DISTR.
of Paste Used on the Inside of
e Tubes
Iconosco
NO. OF PAGES
p
~
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REQUIREMENT N
REFERENCES
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THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
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2? April 1953
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1. Under the guidance of PETRENKO, a Soviet, a control measuring apparatus was devised
for measuring the thickness of the silver paste used on the inside of iconoscope
tubes. 25X1 X
Since this control measuring equipment was to be portable, it was constructed
throughout of aluminum, this being the lightest metal available. (See page three)
4, The equipment consisted ofs
.a. A galvanometer which was mounted horizontally on the board and connected to the
photocell located on the side of the tube.
b. A photocell tube which was mounted on the left side of
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the device had Russian markings; I don't know where it was manufactured.
co Directly opposite the photocell was located.a 40-watt lamp similar to an auto
bulb, operating on 110 volts DC. It was a clear round bulb with a metal reflector
located inside. The physical size of the lamp was approximately 30 mm in diameter.
I saw~this item in a Soviet catalogue which illustrated other bulbs such as kino
lamps, auto lamps, and ordinary light bulbs.
5. The iconoscope tube was placed on the four asbestos-wound iron supports. Then the hood
or cover was put on this board,making sure that the red velvet cloth, located at the end
where the neck of the tube protruded, completely eliminated any light from entering
while the test was being conducted. The tube could not be moved when once the hood
was placed over it.
There were two oval-shaped slots, one on each side, approximately 40 mm wide and 20
mm high. The photocell and bulb could be moved horizontally but not vertically; the
d
r
b
t
.
e
e measu
o
width of the slots permitted the width of the silver painted strip
The 40 -+ratt light bulb was then energized; and,if the light showed through to the other
side where the photocell was located, the galvanometer would so indicate. If the coat-
.
-ing was too thin,the tube was discarded, and destroyed. I don't know where the 25 . X1X
discarded or approved tubes were taken.
8.
Two such devices were made so that the tube could be measured first with the photocell
on one side: and then, by placing the tube in the other box, the reverse could be mea-
sured.
10, The coating (or paste) inside the tube was called "silver paste" by the Soviets (also
by the Germans in Germany). I don't know the composition but I do know it derived its
name from its color.
11. I don't know how many ube .*re ;teste4r.per day.
12. I overheard more ti-1
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tactln~deice~! .iwere? made but.il:lon~=t There. they were used.
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