Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter but the outdated cord has

but the outdated cord has been removed for safety

This is a front left auxiliary cockpit window installed in some G-model B-17's

revealing the gyro mechanism itself

the AN-104-series is the most common US VHF aircraft mast of WWII

Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter but the outdated cord hasHere is a complete WWII era Astrograph, Type A 1, make by Eastman Kodak. This instrument was used in aircraft with a navigator crewman as an aid to determine the position and course of the aircraft during nighttime flying using celestial navigation. The black projector was installed above a map table at the navigators station at the height specified by the height gauge included in the kit. The star chart for the intended course of the aircraft was