Altimeter AAU-8/8A 35,000FT KC-97 When used in conjunction with

When used in conjunction with a suitable nondirectional (vertical) antenna

The glass has some dust on the inside

and as used in aircraft-carrier-based Grumman Cougar F9F-5 and North American Fury FJ2 Jet Fighters

Radial arms or vanes attached to the card dampen the swing of the needle

Altimeter AAU-8/8A 35,000FT KC-97 When used in conjunction withThis is a Cold War Vietnam War era Altimeter, Type AAU 8 8A, made by Aerosonic, part number A35 AUU 8A A, indicating altitude to 35,000 ft, used in aircraft of the US military. The exact type of aircraft has not been determined at this time, but is similar to that used in the AH 1 Bell Cobra Attack Helicopter of the US Army. Given the maximum altitude application of 35,000 ft, it make sense that this may have been specified for helicopters. The knob