Training Manual, 20mm M2 Automatic Aircraft Cannon Spanish This was a personal compilation

This was a personal compilation of a student or an instructor at the Amarillo Texas B-29 service school

There is a crack on the rim/ring

with the pointer rotating once from 0-10

the manual is in very good condition given its age

Training Manual, 20mm M2 Automatic Aircraft Cannon Spanish This was a personal compilationThis is an original WWII era training manual for the Oldsmobile manufactured 20mm M2 Automatic Cannon. This manual was used in the training of armorers in the US Army Air Force and the US Navy. The 20mm M2 cannon was installed in the P 38 Lightning, the tail position of the B 29 Bomber, P 61 Black Widow, and the F6F 5N Hellcat. This 68 page manual describes the gun and its subassemblies, service and maintenance, and parts list. It is in reasonably