Training Manual, 37mm M4 Automatic Aircraft Cannon A-26

Training Manual, 37mm M4 Automatic Aircraft Cannon A-26This is an original WWII era training manual for the Oldsmobile manufactured 37mm M4 Automatic Cannon. This manual was used in the training of armorers in the US Army Air Force and the US Navy. The 37mm M4 cannon was installed in the P 39 Airacobra and P 63 King Cobra fighters, as well as on some US Navy PT Boats. This 77 page manual describes the gun and its subassemblies, service and maintenance, and parts list. It is in reasonably good condition

This is an original post-war Pilots Handbook for the US Navy Hellcat Fighter

the needles point continuously toward magnetic North

from 400-3600 RPM

Made by Askania

One of the 3 metal feet is damaged (see photo)

long and short

It is in "experienced" condition

The knob rotates and the barometric card turns

but it intact

powered by a 24 volt DC circuit

made by Sperry part number 668899

has a different serial number so is not the original for this watch