Pilots' Information File USAAF May 1945 P-2 Neptune The knurled rim around the

The knurled rim around the glass lens can be rotated (this one is a bit stiff)

or perhaps 2 or all of these positions

diagrams and cut-aways

you know that the Committee of the Emancipation of the Peoples of Russia is now organized

At the top of the compass is a rotatable glass lens with parallel line markings and degree markings around its perimeter

Pilots' Information File USAAF May 1945 P-2 Neptune The knurled rim around theHere is a WWII era Pilots' Information File published by the US Army Air Force with revisions through May 1945. It contains the essential information on the duties and responsibilities of the pilot. It is in very good condition given its age. It has some wear on the cover but the pages in intact. Measures 8. 5 x 11 inches, and ~0. 5 inches thick.