Type AN 5835-1 dead reckoning computer owned by Fenton B. Sands

A dead reckoning computer with yellow plastic base with a green grid. Black circular dials on either side of a slide with yellow print indicating degrees and cardinal points. A clear plastic ruler is attached to the back. Degrees and measurements included are in black. Black circular rings are held together with wire on one side. Text on a black circular ring includes manufacturer's information and an object name: [J.B. CARROL CO. ORDER NO (11-107) 44-10669 / MANUFACTURERS PART NO. 100 / COMPUTER, DEAD RECKONING / TYPE AN 5835-1].