Fuel Quantity, Bomb Bay Tanks, DJ-20 Curtiss The fluid in the rear

The fluid in the rear chamber is absent

The interesting aspect of the design of this compass is that the directional mechanism lies horizontally within the rear chamber

The screw (H) (two) serves to fasten the instrument to the mounting plate

an early navigational aid used in aircraft of the US Army Air Corps

and multiple rocket launchers

Fuel Quantity, Bomb Bay Tanks, DJ-20 Curtiss The fluid in the rearHere is a WWII era or post war era Bomb Bay Fuel Quantity indicator, GE Type DJ 20, model 8DJ20AFM, stock number R88 I 2065 727. This indicator shows the fuel remaining in each of four auxilliary fuel tanks located in the bomb bay of the aircraft: Forward Left and Right Hand, and Aft Left and Right Hand tanks. Each tank has a capacity of 250 US gallons, totaling 1000 gallons in all. Bomb bay fuel tanks were typically installed in the bomb bay for