Telescopic Optical Sights 1 OM 8 and 1 OM 81

Description of 1 OM 8:
Designed for target observation with magnification. Determining the approximate distance to the target and accurate target aiming. Increased fire efficiency. Mounted to the Anti-aircraft automatic sight ZAP-23, hunting rifles and combined battle and hunting guns.

Description of 1 OM 81:
It is used for target observation under magnification and for determining an estimated target distance and to Increased fire efficiency. It is mounted together with collimating sight 1OM80 on the artillery 6U6 mount with heavy machine-gun HCB 12.7 mm.

Technical characteristics of 1 OM 8 and 1 OM 81:
Magnification: 3.5 x
Field of View: 4°30`
Exit pupil distance: 72 mm
Exit pupil diameter: 6 mm
Resolution: 17“
Fire distance: 5000 to 2000 m
Fire distance of 1 OM 81: up to 2000 m
Value of a scale division of the distance scale: 100 m
Side corrections range, artillery thousandths (1/6000): ± 0 – 10
Value of a scale division of the side corrections, artillery thousandths (1/6000): 0 – 010
Parallax: ≤ 2“
Attaching diameter of the sight cylinder part: 26.5 mm
Operational temperature range: n/a
Operational temperature range of 1 OM 81: -45° C to +50° C
Weight: 0.200 kg
Size: 45×170 mm