Cox and Stevens
Intercept Officers Equipment, Type I (Navigation Computer)
This 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.
The carton measures ~ 12 in x 5 in x 1.5 in. Its is in very good condition given its age. The metal card holding the lid computers in place needs re-glued to the inside lid.