Altimeter Type B-11 20K Ft, Air Force US Army UH-1 A-25 Shrike

A-25 Shrike

so it was likely used in a USN aircraft

The Air Position Indicator Computer was installed in the instrument panel of the navigator

published in 1940 by the British Royal Air Force Air Ministry

Altimeter Type B-11 20K Ft, Air Force US Army UH-1 A-25 ShrikeThis 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. Altitude was indicated from 0 10,000 ft by the long pointer along the outer scale. As the aircraft