1) Enola Gay device 2) Sight 
A bombsight is a device used by aircraft to accurately drop bombs. Bombsights are a feature of most aircraft from World War I on, first found on the purpose-designed bomber aircraft, and then moving to fighter-bombers and modern tactical aircraft as these aircraft took up the brunt of the bombing role. A bombsight has to estimate the path the bomb...
(from the article `military aircraft`) ...in France, and a license-built version of their turret had appeared on the British Boulton Paul Overstrand bomber in 1934. Meanwhile, the U.S. ...
[n] - a sighting device in an aircraft for aiming bombs
bombsight A device in a combat aircraft for determining the point at which to drop a bomb in order to strike a target.
noun a sighting device in an aircraft for aiming bombs
(in an aircraft) an instrument for aiming bombs at a target, esp. a device that can assume complete control of the aircraft during a bombing run, can automatically compensate for speed, winds, etc., and can guide the release of bombs for maximum accuracy in striking the target.