Tachometer, Jet Engine, Type E-34 Vulcan It is not a photocopy

It is not a photocopy nor a CD

but it is fully intact

the altimeter is an electronic repeater of the information received from the CPU-46A altitude computer

published by the US Army Air Force in January 1944

Tachometer, Jet Engine, Type E-34 Vulcan It is not a photocopyThis electrical Tachometer was used in Cold War era jet fighters and trainers of the United States Air Force, such as the F 86 Sabrejet, F 94 Starfire, and T 33 Shooting Star. Made by General Electric, to USAF spec Type E 34, part number 8DJ57HAA. Has a serial number prefix of AF 52, likely made for a USAF aircraft order in 1952. The small pointer indicates engine RPM around the inner scale up to 50%, then the larger pointer indicates RPM around the