Navigators Information File, WWII George Fighter The glass and case are

The glass and case are intact and the lettering is distinct

Early Lockheed C-130 Hercules transports used this system

See spec sheet in photos

at USAF SBAMA (San Bernadino CA Air Materiel Area)

there is a small cover installed over a separate selector switch designed to engage a formation stick

Navigators Information File, WWII George Fighter The glass and case areThis is an original WWII era Navigators Information File published in 1944 (updated 1945) by the US Army Air Force. It is the basic reference book for aircraft navigators in the performance of their duties. See photos. The page numbers are by section, so total pages are not estimated here. It is about 1 2 inch thick. All pages are intact as is the soft cover, which has some watermarks. It is in very good condition given its age.