F7U-3 Cutlass Flight Computer 1955 Douglas as appeared in the WW2

as appeared in the WW2 Fighters P-51D Mustang

Click-action of the button appears to be intact

It was also used in the Gyro Flux Gate Compass System as a remote direction indicator

See the photo of the Sherman Tank with the driver's and assistant driver's hatches open

Junkers Ju-88

F7U-3 Cutlass Flight Computer 1955 Douglas as appeared in the WW2Here is a rare item: a Flight Computer for the US Navy's F7U 3 Cutlass carrier based jet fighter bomber, made in 1955. It is a combination computer. The first is the Rest Computer. The Rest Computer was designed for simple solution of level flight cruise control problems. It is a 3 disc circular slide rule. On the reverse side is the combination Climb and Descent Tabulator. It is a 2 disc circular calculator. It includes an interesting table "Fouled