TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P (5) The deflection knob causes the M146 telescope mount to pivot about the yoke pins. Each revolution of the deflection knob represents an 8-mil angular change in deflection. The deflection knob is an acme nut and screw arrangement similar to the elevation knob. A correction dial, similar to that described in (4) is provided for the deflection mechanism. A spring-loaded deflection ratchet automatically locks the controls at all even line increments on the deflection dial. (6) The cable assembly, which is held to the M146 telescope mount by means of external clips, supplies 24-volt dc power from the vehicle supply to the M118A2/M118A3 elbow telescope through a standard quick-disconnect sealed connector. Change 1 1-3