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). SETTING UP AZIMUTH TEST FIXTURE (cont) 5 6 7 8 9 10 11 12 13 Install collimating telescope holder (7) on rod of universal surface gage (8). Install collimating telescope (9) in collimat- ing telescope holder (7). Place precision level (10) on telescope holder (7). Level telescope holder. Adjust collimating tele- scope to a height of 6.8 in. (17.3 cm). Place universal surface gage (8) with hold- er and collimating telescope on azimuth test fixture adapter (4). Direct line-of-sight of collimating telescope at plumb line (11). Loosen holder locking screw (12) and rotate collimating telescope until its vertical reticle line coincides with plumb line along entire length. Tighten holder locking screw (12). Turn universal surface gage (8) until colli- mating telescope line-of-sight is directed toward the projector collimator (3). Raise or lower and, if necessary, level projector collimator level (13) to aline line-of-sight of projector collimator (3) with collimating telescope (9). Projector collimator reticle must be plumb with collimating telescope reticle. If projector collimator reticle is not plumb with telescope reticle, loosen collimator holding screws (14) and rotate projector collimator (3) until its vertical reticle is plumb with telescope reticle. Tighten colli- mator holding screws. Remove universal surface gage (8) with instaIled collimating telescope (9) from azimuth test fixture. Adjust collimator objective scale (15) to indicate 50 yd (46 m). Rotate azimuth ring (16) of azimuth test fixture to zero. 4-18