Air Navigation Computer MB-4A, Dead Reckoning, with Dietzgen Divider Regia Aeronautica this Gyro Horizon was ubiquitous

this Gyro Horizon was ubiquitous in its use

Would be a terrific addition to any collection of Korean War or Cold-War-era aviation memorabilia

using an A-6 cartridge containing 50 feet of 16mm film and a 35mm lens

5 inches diameter and ~2 inches deep

Operability unknown

Air Navigation Computer MB-4A, Dead Reckoning, with Dietzgen Divider Regia Aeronautica this Gyro Horizon was ubiquitousHere is an Air Navigation Computer as used by US Air Force navigators from 1940 ~1980 for dead reckoning navigation. This one appears to be from the 1950's. Included with the computer is a 14 inch Plotter Type PLU 1 C, and a Dietzgen Divider in an aluminum tube, for measuring and repeating distances on a map. Computer measures ~5. 5 inches wide and ~12 inches long in its case.