Oil Temperature Indicator, Dual Engine, Type A-24 US Army Air Corps WWII P-61 as appeared in aircraft such

as appeared in aircraft such as the Grumman S2E Tracker and Lockheed P2V-7 Neptune Antisubmarine Warfare aircraft (according to their flight manuals

and the droppable auxiliary tank (in bomb bay

with the small "V" pointed toward the front of the airplane

It is similar to the more common AN-104 Mast Antenna used in later aircraft versions

According to the US Army Air Force's Maintenance Interchangeability Cross Reference Chart dated Dec 1943

Oil Temperature Indicator, Dual Engine, Type A-24 US Army Air Corps WWII P-61 as appeared in aircraft suchThe Army Type A 24 Dual Engine Oil Temperature Indicator was used across a number of US Army Air Corps and Air Force aircraft during WWII, including heavy bombers B 17, B 24, B 29, medium bombers B 25 and B 26, as well as light bomber A 20, according to the Accessories Interchangeability Chart dated Feb 1945. This A 24 was made by Sutton Horsley, part number 2213 7, and has a serial number prefix of AF42, indicative of a 1942 manufacturing date. This