Altitude and Airspeed Handset, Gunnery System B-29 Superfortress F3D Skyknight They are quite difficult to

They are quite difficult to find

25 inches diameter and ~5

This model has two adjustable vanes (peep and far) with prism for viewing compass bearing and spirit level

The serial numbers on the instrument and the case are different

Altitude and Airspeed Handset, Gunnery System B-29 Superfortress F3D Skyknight They are quite difficult toHere is an original WWII era Altitude and Airspeed Handset as used in the Boeing B 29 Superfortress bomber. This was a module of the B 29's Central Fire Control System, the remote control gun turret system. This critical component was installed at the Navigator's station in the B 29 (see image of the station from the B 29 flight manual. Handset is at the bottom of the photo). It was his responsibility to ensure that the dials on the handset for