Original U.S. WWII Sperry Aircraft Gunsight K-13 Compensating Sight Spanish Flags The colors are vibrant and

The colors are vibrant and the eyes feel alive

Karl Heisler

It 's stock is walnut

The six surviving tanks arrived at the main gate at 10:00 and began their attack

Original U.S. WWII Sperry Aircraft Gunsight K-13 Compensating Sight Spanish Flags The colors are vibrant andOriginal 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