Altimeter Type B-11 20K Ft, Air Corps US Army Martin The body paint is evidence

The body paint is evidence of its experience

Likely from the 1950s or 1960s

The knob turns the heading selector pointer (the wide

Marine Corps Air Defense Group - 43

Altimeter Type B-11 20K Ft, Air Corps US Army Martin The body paint is evidenceThis is a WWII era Sensitive Altimeter displaying aircraft altitude from 0 to 20,000 feet. The Type B 11, made by the Bulova Watch Company, was used in a variety of aircraft during early WWII with a maximum performance ceiling below 20,000 ft. This altimeter has a serial number prefix of AF 43, indicative of a year of manufacture of 1943. See spec sheet. ACUSARMY is imprinted on its face, for Air Corps US Army. Altitude was indicated from 0 100 ft by