Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter This is a front left

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

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

revealing the gyro mechanism itself

The yellow paint on the bottom was used to indicate if the pointer calibration screw had been tampered since last calibration (the paint is intact)

25 inches square and ~7 inches deep

Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter This is a front leftHere 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