Gun Sight, Ball Turret, Type K-4 Sperry, B-17, B-24 RAAF This camera was originally manufactured

This camera was originally manufactured as a K-25 A

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22317 as used in the WWII-era JU-87 Stuka and JU-88 dive bombers and some ME 110 fighters of the German Luftwaffe

Gun Sight, Ball Turret, Type K-4 Sperry, B-17, B-24 RAAF This camera was originally manufacturedThis is an electro mechanical, automatic Type K 4 Computing Gun Sight used in the Sperry ball turret in WWII era heavy bombers such as the B 17 Flying Fortress and B 24 Liberator. Mounted within the ball turret, it hung from the 'ceiling' of the turret just in front of the forehead of the turret gunner (see illustration from turret manual). The gunner took aim at his target by looking through the glass screen mounted on an optic head the bottom of the