30-00 angle corresponded to optical axis of the sight directed along the gun barrel, 00-00 or 60-00 - directed parallel in the opposite direction and so on:įor quick rotation of the sight head the worm mechanism could be turned off, so that the head could be simply turned by a hand in a needed direction instead of rotating the azimuth micrometer head. A complete angle was equal to the sum of reading of the azimuth ring and azimuth micrometer, so for example 10 points on the azimuth ring and 50 on the azimuth micrometer meant 1050 mils (10-50). A full circle (360º) rotation of the azimuth micrometer meant a turn of the azimuth ring at 1 point - for example from 29 to 30 points (from 29-00 to 30-00). ![]() Azimuth drum (micrometer head) in the central part of the sight was graduated in mils from 0 to 100. Thus far everything seems simple, feel free to ask if there are any questions on this.Īzimuth ring of the panoramic sight was graduated in 100 mills from 0 to 60. There were two types of them - BST (large stereoscopic tube) and AST (artillery stereoscopic tube):Īpart from observation these instruments could be used for measuring vertical and horizontal angles, binocular and periscope - for rough measurements and stereoscopic tube - for more accurate. Stereoscopic "tube" (periscope) on a tripod (10x amplification). There were auxiliary instruments used for correcting gun aiming in case there was a deviation as a result of recoil.īinocular (field glasses) with 6x or 8 x amplification Distance was measured in ΔX (50 meters) for sights with a modern metric scale. Typically the gun-sight had a panoramic sight:ĭistance drum, a cross-level and an elevation level.ĭistance drum had several scales for various types of ammunition and for at least a part of propellant charges, in case they were varied. According to the said instruction all instruments were grouped in six classes:Ĥ. It must be added that there were separate instruction on instruments and devices used by AIR (observation) units, that is sound-ranging, light-flashing equipment etc. There were apparently earlier instructions. ![]() Instruments of the battery and battalion for engaging ground targets" published in 1942. ![]() It is "Instruction for the Red Army artillery.
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