Original U.S. WWII Air Corps Type B-5 Drift Meter NATION as they are definitely wool

as they are definitely wool

AUSTRIA - KORNEUBURG MINERAL OIL REFINARY

or who are serving

Zimmerman (CP)

shows rust and paint wear

Original U.S. WWII Air Corps Type B-5 Drift Meter NATION as they are definitely woolOriginal 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