1950s Russian Military PAB-2M Periscope Artillery Aiming Circle Theodolite 9"

Description

Vintage circa 1950s Russian military periscope artillery aiming circle - PAB-2M / 7A919. Includes hardwood base for sculpture mount display.

"Designed to determine the azimuth, to provide orientation according to the stars location, to measure the horizontal and vertical terrain angles as well as for determining distances up to 400 m. based to a certain outer base. The periscopic artillery aiming circle can be used at the observation point of the fire position, as well as for topographic works at daytime and under low visibility conditions (dusk), using illumination for the scales of aiming circle, the monocular and the long range measuring rod.
TECHNICAL SPECIFICATIONS
Aiming circle magnification: 8 x
Field of view (with and without the periscope):
– in artillery thousandths (1/6000): 0 – 83
– in linear meters at distance 1000 m: 87 m
Exit pupil distance: 12.5 mm
Exit pupil diameter: 2.8 mm
Entrance pupil diameter: 22 mm
Periscopity: 350 mm
Range of angle measuring, artillery thousandths (1/6000):
– horizontal angles: 60 – 00 (3600)
– vertical angles: 30 – 00 (180)
Value of divisions of the angle measuring scale and aiming circle scale:
– coarse, artillery thousandths (1/6000): 1 – 00
– precise, artillery thousandths (1/6000): 0 – 01
Value of divisions of the scale for vertical reading:
– coarse, artillery thousandths (1/6000): 1 – 00
– precise, artillery thousandths (1/6000): 0 – 01
Reading accuracy, artillery thousandths (1/6000): 0 – 01 (3.6`)
Value of the round level divisions, artillery
thousandths (1/6000): 0 – 03

Azimuth head:
Magnification: 4 x
Field of view: 90 20’
Exit pupil distance: 9.6 mm
Exit pupil diameter: 4 mm
Value of the level division: 2`
Sighting line shift from the vertical line while turning
at vertical plane at 900, artillery thousandths (1/6000): 0 – 00.4 (1.5`)
Power supply: 2.4V, 2 accumulator batteries type 2HKKB-2, in parallel connected
Temperature ranges operation: : from -50°С to +60°С
Weight (complete set): 15 kg"
(Source: Arcon Partners Ltd)

Condition

Good Overall - Gentle wear commensurate with use/age

Dimensions

5.5" x 5.5" x 8.75" (Width x Depth x Height)