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FM 6-50, MCWP 3-1.6.23 (2) Howitzers without an alignment device. (a) The azimuth scale (nonslipping) is used during boresighting. The tube is pointed at the aiming point when a DAP or test target is used. If the sight is pointed to the right of the aiming point the tube is pointed to the left of the 0-3200 line of sight. Before this correction is made, any azimuth measured will be greater than the azimuth of the tube and any orienting angle will be smaller than the true orienting angle. (The opposite relationship also exists.) (b) The amount of error is determined by referring the sight to the aiming point and reading the deflection. This deflection is compared with the deflection used for boresighting and the difference is the amount of error in boresight. The XO applies the appropriate correction for the boresight error to the measured azimuth or orienting angle prior to reporting to the FDC. He corrects the lay of the pieces as required. 4-33. TRAINING Training in the proper methods of determining and reporting data should be part of training personnel to lay the platoon. Tables 4-6 through 4-8 will help personnel remember procedural steps. These procedures are performed with the aiming circle and the howitzer pantel. . 4-27 |