United States. Dept. of the Army. 1 Remove sightunit (1). 2 Place 800 mils elevation and 3800 mils deflection (red scale) on sightunit and stow in sightunit carrying case. 3 Retrieve aiming posts (and lights, if used) and stow them in their cases.
|Title||:||Operator's manual for 4.2-inch mortar, M30 (1015-00-840-1840).|
|Author||:||United States. Dept. of the Army|