Power Venturi Tube, Single Throat, AN5805-1, Type A-3A F9F Cougar if the thick pointer was

if the thick pointer was at 80

but it is there and shows the spec # and serial #)

flight instruments

uncages the compass card which would then rotate right or left

On its face is embossed AC US ARMY

Power Venturi Tube, Single Throat, AN5805-1, Type A-3A F9F Cougar if the thick pointer wasThis is a nice specimen of the Single Throat Power Venturi Tube used across US military aircraft of the US Army Air Corps Force and US Navy before, during, and post WWII. The US Army Air Corps fighter P 39 Airacobra is an example of an aircraft which used this venturi. The US Navy's TBM Avenger Torpedo Bomber also used this venturi, see illustration from its Erection and Maintenance manual dated 1945. Power venturi tubes provide a source of vacuum for