Engine Gage Unit for US Army Air Force Fighters, 1942, Type B-7, AN-5774-B B-29 It has a date stamp

It has a date stamp of January 14

and the small pointer shows the fuel in 1

and the PBY5A Catalina Seaplane (which used 2)

and possibly military aircraft of that era

This antenna was typically positioned atop the fuselage and behind the cockpit

Engine Gage Unit for US Army Air Force Fighters, 1942, Type B-7, AN-5774-B B-29 It has a date stampThe US Army Type B 7 Engine Gage Unit was used across a variety of aircraft of the US Army Air Force during WWII. In particular, the B 7 made by Manning, Maxwell, and Moore part number 6548 73 15 was used in fighters P 38 Lightning, P 39 Airacobra, P 40 Warhawk, P 47 Thunderbolt, and P 51 Mustang, according to the US Army Air Force's Maintenance Interchangeability Cross Reference Chart dated Dec1943. This example is marked AF USARMY on its face and