Engine Gage Unit for US Army Air Force & Navy Fighters, 1944, AN-5773-1
The AN-5773-1 Engine Gage Unit was used across a variety of aircraft of the US Army Air Force and US Navy during and after WWII. In particular, the AN-5773-1 made by Electric Autolite (aka Motometer) part number 10322-A was used in fighters P-38L Lightning and P-63 A & C Kingcobra according to the US Army Air Force's Maintenance Interchangeability Cross Reference Chart TO-00-45-1 dated Feb 1945. This example has a serial number prefix of AF-44, evidence of a manufacturing year of 1944. However, this example also has a service label with a US Navy stock # R88-G-1020-10 from Naval Air Station Jacksonville, FL dated 1950. This stock number was used in the US Navy's Grumman F8F Bearcat fighter, according to its Erection and Maintenance Manual dated 1948.