Altimeter, Sensitive, AN-5728, 35,000 ft, US Navy WWII 209-02, R88-A-300 Hughes made by Sperry

made by Sperry

MA-1's were also used in UH-1 Huey Helicopters

This is a post WWII Air Data Publications reprint of the October 1944 Air Ministry Publication

This is a Cold War / Vietnam War era Attitude Indicator type ARU-11/A

It has been visually identified as used in the Army Air Corps C-45 Expeditor from its Flight Manual dated 1940

Altimeter, Sensitive, AN-5728, 35,000 ft, US Navy WWII 209-02, R88-A-300 Hughes made by SperryHere is an early WWII era Sensitive Altimeter, US Navy AN 5728, made by Kollsman part number 209 02 and FSC number R88 A 300. BU AERO USNAVY is embossed on its face, and has the alternating munsell green colored markings used across many USN instruments. This sensitive altimeter displayed altitude using 2 pointers and a small inner dial. The first and longest indicated 100's of feet, and the second indicated 1000's of feet along the outer scale. Ten