Common Support Equipment M1A1 Gunner's QuadrantThe M1A1 Gunner’s Quadrant is a portable precision leveling instrument used for laying artillery weapons in elevation, measuring their angles of elevation, and checking the elevation mechanisms of fire control equipment.M1A2 Infinity Aiming Collimator (Collimator, Infinity Aiming Reference)The M1A2 Infinity Aiming Collimator is an optical instrument used for establishing an optical reference from which weapon deflection angles can be measured for indirect fire.M14E1 Aiming Post LightThe M14E1 Aiming Post Light is a battery-powered LED-illuminated device which aids in identifying the location of the near/far aiming post during night and low light operations.M14E1 Aiming Post LightThe M14E1 Aiming Post Light is a battery-powered LED-illuminated device which aids in identifying the location of the near/far aiming post during night and low light operations.M4A1 Range Fire Control QuadrantThe M4A1 Range Fire Control Quadrant is a manually-operated instrument used for laying howitzers and cannons in elevation for indirect fire.M58 Aiming Post LightThe M58 Aiming Post Light is illuminated by green tritium (H3)gas. The M58, used in tandem with the M59 Aiming Post Light, aids in identifying the location of the near/far aiming post during night and low light operations.M59 Aiming Post LightThe M59 Aiming Post Light is illuminated by orange tritium (H3 gas). The M59, used in tandem with the M58 Aiming Post Light, aids in identifying the location of the near/far aiming post during night and low light operations.
