Intercept Officers Equipment, Type I (Navigation Computer) He-177 The master switch is switched

The master switch is switched by pulling (ignition off) or depressing (ignition on) the center post

In the center of the bowl is a semi-float type card to which are attached the magnetized needles and the radial arms

The compass card rotates as it should

was to familiarize pilots and aircrew with the potential effects of flight dynamics upon their physical and mental abilities

Intercept Officers Equipment, Type I (Navigation Computer) He-177 The master switch is switchedThis is a WWII era navigation computer in a kit "Intercept Officers Equipment Type I in its original carton. The bottom of the metal case contains a mechanical computer to solve the wind problem. It has a locking mechanism and a movable arm for drift, adjusted for air speed, interconnected to the heading tracker. The lid contains a table and two calculators, one for flying radio beacons (A's and N's) and one for speed or gals hr. Pretty cool device.