Bombardiers' Information File US Army Air Force May 1945 Piasecki The "retiflector" sight is mounted

The "retiflector" sight is mounted in the center below the elevation gyroscope and above the azimuth gyroscope

TBM Avenger Torpedo Bomber

but utilizes an electro-magnetic compensation system

So it is possible that there is some connection there

The Army Type F-2 Airspeed Indicator was used across a number of US Army Air Corps and Air Force aircraft during WWII

Bombardiers' Information File US Army Air Force May 1945 Piasecki The "retiflector" sight is mountedHere is a WWII era Bombardiers' Information File published by the US Army Air Force May 1945. It contains the essential information on the duties and responsibilities of the bombardier. It is in exceptional condition given its age. Measures 8. 5 x 11 inches, and ~0. 5 inches thick.