Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 This is an authentic GCT

This is an authentic GCT (Greenwich Civil Time) Master Navigational Watch AN-5740 Hamilton Part No 33106

marking the change in altitude

The lettering on the panels are slightly worn

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

Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 This is an authentic GCTThis 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.