Altimeter Type B-11 20K Ft, Air Force US Army UH-1 continues through the broadening tube

continues through the broadening tube and passes out at the tail end

so it was likely used in a USN aircraft

the operating ranges for each parameter are labeled in green/red on each scale

This is a Pocket Reference Handbook containing 8 diagrams of the airframe stations of the US Navy's Patrol Bombers PB2Y Coronado and the PBM Mariner

A-25 Shrike

Altimeter Type B-11 20K Ft, Air Force US Army UH-1 continues through the broadening tubeThis 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