Pilots Compass, WWI Air Forces of USA Has a constant deviation corrector

Has a constant deviation corrector and a course setter

The remaining pages describe the aircraft of each nation's air services

This is a Fuel Quantity Indicator for the Main tanks as used in versions of the P-38 Lightning

How that got on a British instrument

Pilots Compass, WWI Air Forces of USA Has a constant deviation correctorHere is an authentic WWI aeronautical compass with a very curious history. On the label affixed to the compass housing appears: "A. S. S. C US ARMY R. A. F. Pilots Compass. EUGENE M. SHERMAN SEATTLE WASH USA". A. S. S. C. was the Aviation Section Signal Corps, which was the aerial warfare service of the US Army from 1914 1918. R. A. F. was likely the Royal Aircraft Factory (aka Royal Aircraft Establishment, but not the Royal Air Force since it didn't