GRADUATION OF THEODOLITE SCALES, ARSENAL NO. 1, KIEV

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A001400010002-3
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 15, 2016
• Document Release Date: December 16, 2003
• Sequence Number: 2
• Publication Date: June 11, 1953
• Content Type: REPORT

Approved For Release 2004/02/11 : CIA-RDP80-0081OA001400010002-3
CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
SECR
25X1
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.B. 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.
25X1
COUNTRY USSR (Ukrainian SSR) REPORT NO.
SUBJECT Graduation of-Theodolite Scales, DATE DISTR. 11 June 1953
Arsenal Nod 1, Kiev
NO. OF PAGES
25X1
PLACE ACQUIRED
REQUIREMENT NO.
REFERENCES
25X1
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
25X1 le A: team from Zeiss, Jena,, working at Arsenal No. 19 Kiev., was enga ed
2 5X1 in the production of various optical instruments. This report is
to clarify the pic-
2 5X1 ture regarding the graduation of the horizontal circles of the so-called
THB model theodolite.
20 The horizontal circles were graduated to 20 minutes (minutes of arc),
with each degree numbered. This was for those theodolites manufactured
with 360 degrees to a complete circle. For those with 100 "grads" or
divisions to,a complete circle, the-graduations corresponded in angular
separation. On. the vertical circle., the graduations were made'to 30
minutes, with each degree numbered. The graduations were made on a
circular dividing engine., of which six had been built at, Zeiss, Jena,
previously,.and all transported to Arsenal No. 1. The dividing engines
were located on vibrationl?ss piers and in a constant
temperature room. IT the graduations were engraved directly on the scale.,
the abso`1