B-29 Superfortress Familiarization and Maintenance Manual, USAAF 1944 Northrop How that got on a

How that got on a British instrument

the pilot engaged the cockpit Torpedo Camera switch to heat the lens in order to remove any accumulation of frost or mist

This specimen has a service label from Naval Air Station Norfolk (VA) dated 1955

which would be rotated to align with the compass card floating in the reservoir below it

It is started by depressing the silver spring-loaded knob (lower right)

B-29 Superfortress Familiarization and Maintenance Manual, USAAF 1944 Northrop How that got on aThis is an authentic B 29 Familiarization and Maintenance Manual as designed by Boeing and published by AAF Publications of the US Army Air Force. This is its first printing, June 1944. The manual, with ~634 pages, describes the following systems of the aircraft in dedicated, color tabbed sections: Introduction (an overview of the entire aircraft with illustrations and diagrams) 30 pages Electrical, 63 pages Fuel System, 38 pages Control Stands and