Original U.S. WWII Air Corps Type B-5 Drift Meter NATION with a lovely half-octagonal brass

with a lovely half-octagonal brass barrel

as they are definitely wool

probably deer skin or something similar

or who are serving

Zimmerman (CP)

Original U.S. WWII Air Corps Type B-5 Drift Meter NATION with a lovely half-octagonal brassOriginal Item. Only One Available. This aircraft Drift Meter, type B 5, was used in several US Army Air Force bomber and transport aircraft, including the B 17 and B 24. The B 5 drift meter is used to measure the angle between the heading of the aircraft and its actual path over the ground, thus used to correct the course of the aircraft. The instrument's viewing port projects from the side of the aircraft. When viewing the ground through the eyepiece