Altimeter, Mk XIIIB, 0-20,000ft, British Royal Air Force A-30 It is very similar to

It is very similar to I-65 compass indicators used in aircraft of the Air Corps US Army during WW2 (the primary difference in appearance being the centerpoint of direction

This is a rare opportunity to own an instrument that was in all likelihood made specifically for the largest piston-engined aircraft ever mass-produced

The dial measures 2

We've been told that this was used in a version of the F4F Wildcat fighter

Altimeter, Mk XIIIB, 0-20,000ft, British Royal Air Force A-30 It is very similar toHere is a British Altimeter (Height Indicator) Mk XIIIB as used in pre WW2 aircraft as well as aircraft during WW2, with a maximum ceiling of 20,000ft. It has the original crown symbol of the Air Ministry on the back. The knob rotates the face of the instrument to correct the scale. According to the Royal Australian Air Force 346 Types and Locations of Instruments dated 1945, this indicator was used in the Avro Anson, Supermarine Seagull V, and Short