Special Features:

O/a 14.5 in. H 5.5 in. W 8 in. Lg front to back 3.5 in. Od periscope tube; 5 in. Periscope offset; single optical syst 1.5 x magnification; view 48 degrees hor and vert; w/elev 60 degrees elev 15 degrees depression of line of sight; single eyepiece; reticle circ type w/vert ctr marking calibrated at 8 12 18 20 and 24 ord p/n 8270618; accommodations for lt instr 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.