Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 but with markings for engines

but with markings for engines 1 & 2 or L & R

which indicates with the thin inner pointer

marking the change in altitude

as well as the bombardier B24 Liberator

Also included is information on Japanese aircraft engines

Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 but with markings for enginesThis is a set of two original WWII era booklets on Machine Guns (50 and 30 caliber) and related subjects, including sighting, harmonization, range estimation, and others. These were published by the Gunnery Division of the USAAF Pre flight School at Santa Ana Army Base in California during the 1940's. The booklets are 22 and 24 pages respectively. These came to us from the estate of a B 17 flight instructor.