Original U.S. WWII Sperry Aircraft Gunsight K-13 Compensating Sight Japanese Edged Weapons They then turned to the

They then turned to the task of aiding the rescue of the Czech Legion

Fuse delay time was four seconds

still comes with with original wax paper wrapping

Proving highly adaptable

Original U.S. WWII Sperry Aircraft Gunsight K-13 Compensating Sight Japanese Edged Weapons They then turned to theOriginal Item: Only One Available. The K 13 Compensating Gunsight, made by Sperry, is an electrically powered gunsight designed to compensate for altitude and airspeed. Typically mounted on the rear housing of a . 50 caliber machine gun from a side waist gunner position in the aircraft. Used in Boeing B 17 Flying Fortress and Consolidated B 24 Liberator bombers during WW2. It was a late war innovation that used the aircraft altitude and speed with the