Special Features:

Cylindrical shape; over-all dimensions, 14-1/2 in. H, 5-1/2 in. W, 8 in. Lg front to back, 3-1/2 in. Od periscope tube; 5 in. Periscope offset; optical system type, single optical system, 1.5 x magnification; field of view, 48 deg. Horizontal, 48 degrees vertically; w/elevation mechanism, 60 degrees elevation of line of sight, 15 degrees depression of line of sight; single eye piece; accommodations for light instrument incl., model m50

Properties:

A rectangular or cylindrical periscope, usually positioned in a holder, or mount within an armored vehicle. It is used to observe terrain, near and distant targets, and the like. It may also be linked to gun-training mechanisms for integration of movement for fire control purposes.