Pitot Tube, G-2, Air Force US Army WWII 782-02 Hughes and those from 200 to

and those from 200 to 500 are condensed scale markings

or Gyro Horizon

aircraft tachometer made by General Electric under contract for the US Navy

or Flag Signaling

indicative of a year of manufacture for an aircraft order for the USAF

Pitot Tube, G-2, Air Force US Army WWII 782-02 Hughes and those from 200 toThis is an example of the WWII era G 2 Pitot Tube used on US Army Air Force heavy bombers B 29 Superfortress, B 17 Flying Fortress, B 24 (J model) Liberator, medium bomber B 26 (F&G models) Marauder,and fighter P 61 Black Widow (according to the US Army Air Force's Maintenance Interchangeability Chart dated Feb 1945). Pitot Tubes are used to provide impact and static pressures for the operations of various flight instruments. Impact pressure is the