TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P 31 Set parallax distance to 130 meters + 10 meters by rotating objective (19) on projector collimator (10). VISUAL INSPECTION 1 Check that all screws and lockwashers are present and tight. 2 Check that mounting surfaces are clean and free of nicks and burrs. 3 Check that M115 panoramic telescope is free of dirt, corrosion, and foreign matter. 4 Check that paint is not chipped. 5 Check that all parts are present and free of damage. EYEPIECE FOCUS 1 Install M115 panoramic telescope (1), four washers (2), and four screws (3) on adapter fixture (4). 2 Using dioptometer (5), check reticle focus for optimum focus of minus 0.75 to minus 1.0 diopter. 3 If adjustment is required, remove two setscrews (6) and rotate eyepiece (7) until optimum focus is achieved. 4 Apply sealing compound (item 10, appx C) to threads of setscrews (6). 5 Install two setscrews (6). 2-63