ZAVOD NO. 346 IN LENINGRAD

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00457R014500310003-8
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 20, 2016
• Document Release Date: June 19, 2007
• Sequence Number: 3
• Publication Date: October 24, 1952
• Content Type: REPORT

Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8
LIEB 1952 01 -444
cv
CD NO.
PROHIBITED BY LAW. THE REPRODUCTION OF THIS FORM 15 PROHIBITED.
COUNTRY USSR (Leningrad Oblast)/Germany (Soviet Zone)
SUBJECT Zavod No. 346 in Leningrad
DATE OF
INFO.
PLACE
ACQUIRED
OF THE UNITED'STATES, WITHIN THE MOAN ING OF TITLE 18, SECTIONS 793
AND 794, OF THE U.S. CODE, AS AMENDED. ITS TRANSMISSION OR REVE-
DATE DISTR. 24 October 1952
NO, OF PAGES3
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
REPORT NO.
Not graded
THIS IS UNEVALUATED INFORMATION
Zad No 0 346 _in Leningrad
Plant 346 in Leningrad manufactures optical equipments, including spectrographic
apparatu s, photographic objectives, optical projectors, copies of'the former
Zeiss opti etei9 and rectangular coordinate measuring microscopes, All of these
instruments were simply copies of former Zeiss instruments; they were'fully as
satisfactory as the ones produced at Zeiss but no different from them. The plant
was directed by former Zeiss peoples, and the machine tools and optical irking
machine had all been bro ht from the Zeiss Jena Plant25X1
gratings could have been produce(U9
type and had quartz optics, No grating instruments were produced.
INFORMATION REPORT REPORT
SECRET
SECURITY INFORMATION
25X1
49o-146
The spectrographic and'spectroscopic instruments made here were of the prism
NAVY review completed.
(uric f x F
LThusa no diffraction
Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8
 Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8
SECRET
...2..
After the instruments left 0 shop, they were taken to another "de .
artment,which was.air-oonditioned,and were there tested and` calibrated.
'In the United States, this would be called a Standards Laboratory
This department rejected about 2Q%,of the instruments, and mot?of?_the
flaws found were generally corrected in the assembly department, which
meant that. the errors. were errors.. in . assembly. and, not errors in the
ma~nufacature of the . component parts., ... -
The Optimeter
5. The optimeter is 'a device for optically comparing ,objects wi't'h`a
standard and gives an accuracy of about .4.00001 inch. 'Throughan
optical and mechanical..magnifying system, a projected image if,e
scale is moved: past afiducial mark by an amount which is a, function
of the angle of tilt of a front surfaced mirror. This' instrument was
manufactured by the Zeiss plant as early as 1929.and is-described in
their old catalogues as well as on pages 333, 3349. 335,and336'of
Vol.1..of "Gauges and Pine. Measurements" by P H Rolt and published by
the laeMillan Co, Limited, of London. ..It is used for the checking
-of routine work,in the manufacture of precision instruments, as well
as for the checking of rough finished gauges in gauge laboratories.
Rectangular Coordinate ieasuring Microscope
6.. The rectangular coordinate measuring microscope. was` of the:usual de-
sign. There was a long-focus microscope which c,ould,` with the' aid
of two micrometer sorewe, be moved in two ; perpendicular.direotione
over an area of 200 a 100 mm. Two vernier scales .made,it possible
to read the coordinate positions to an accuracy of 0.1mma and':a
micrometer disk in the eyepiece of the measuring microscope made it
possible to read the final position to an accuracy of 0#001 mm.
This instrument. is used in jig and gauge manufacturing and cyan be
found in any well-equipped firm which manufactures tools and ,guages.
SECRET
25X1
Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8
 25X1 Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8
Approved For Release 2007/06/19: CIA-RDP82-00457RO14500310003-8