Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter Directional Gyro Indicator

Directional Gyro Indicator

likely from the 1950's and used in US Navy aircraft judging from the blue/green of some of its lettering and the presence of a USN stock # (R88-I) etched on the top edge of the case

25 inches square and ~7 inches deep

revealing the gyro mechanism itself

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

Astrograph Kit with Star Charts, Type A-1, Kodak, WWII Navigator's Tool HH-3 Helicopter Directional Gyro IndicatorHere 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