Pitot Tube Type D-1, 369D-012 Beaufort and Type 100 Transport) but

and Type 100 Transport) but also used in the Type 97 Mitsubishi Ki-21 Sally Bomber

The B-20 Compass had a small module containing magnets at the top of the compass to compensate for deviation

The knob is used to adjust the altimeter to the barometric pressure as displayed in the small window at the 6 o'clock position

Measures 8 inches x 10

Pitot Tube Type D-1, 369D-012 Beaufort and Type 100 Transport) butThis is a WWII era Pitot Tube, Type D 1 (also AN5816 2), as used by aircraft of the US Army Air Force and US Navy, such as bombers B 24 Liberator, B 25 Mitchell, B 26 Marauder, and A 26 Invader, fighters P 39 Airacobra, P 40 Warhawk, and P 47 Thunderbolt, dive bomber SBD Dauntless, and torpedo bomber TBM Avenger (see illustration from the TBM Erection and Maintenance Manual dated 1944). On most bombers, this pitot tube would be mounted on a stanchion