TM-9-1290-262-24&P Technical Manual for M2A2 Aiming Circle Download
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ARMY TM 9-1290-262-24&P MARINE CORPS TM 00476C-24&P AIR FORCE TO 49A7-3-72/74 4-4. TEST AND ADJUSTMENT PROCEDURES (cont). COLLIMATION (cont) 15 16 17 18 19 20 21 22 23 24 25 26 27 Aiming circle reticle lines and projector collimator reticle lines should remain within 0.1 mil tolerance. If not, repeat steps 10 thru 14 until tolerance is met. Loosen two elevation micrometer knob screws (5). Hold elevation knob (6) and turn elevation micrometer scale (7) to register zero. Tighten two elevation micrometer knob screws (5). Recheck that elbow telescope reticle is still in coincidence with collimator reticle. Turn elevation knob (6) until all three ele- vation scale setscrews (8) are accessible. Loosen three elevation scale setscrews (8). While sighting through elbow telescope eyepiece (9), turn elevation knob (6) to bring elbow telescope reticle into coinci- dence with collimator (10) reticle. Turn elevation scale (11) to register zero. Tighten three elevation scale setscrews (8). Loosen two azimuth micrometer knob screws (12). Hold azimuth knob (13) and turn azimuth micrometer scale (14) to register zero. Tighten two azimuth micrometer knob screws (12). 4-32