Pilots' Airplane Manual CAA Bulletin 27 1940 DC-7 Here is Radar Pressure Indicator

Here is Radar Pressure Indicator use in radar-equipped aircraft during late WWII and post WWII

Here is an engine Torque Pressure Indicator

This unit has a serial number prefix of AF-43

with the small "V" pointed toward the front of the airplane

75 inches high and 5

Pilots' Airplane Manual CAA Bulletin 27 1940 DC-7 Here is Radar Pressure IndicatorThis is an original general aviation Pilots' Airplane Manual published by the Civil Aeronautics Administration in September 1940 as Bulletin No. 27. The focus on this manual is the structure, maintenance, and rigging of aircraft. This 150 page, 8. 5 x 11 inch manual is in reasonable condition given its age. There are a few minor tears, but the pages appear to be intact.