F11F-1 (F-11A) Tiger Fighter Flight Computer 1957

This is an original Rest Computer and Climb and Descent Tabulator developed specifically for the US Navy's Grumman F11F-1 (aka F-11A) Fighter jet in April 1957.  The Rest Computer was designed for simple solution of level flight cruise control problems. It is a 3-disc circular slide rule. The Climb and Descent Tabulator is on the reverse side and is a 2 disc circular slide rule. 

Measures 6 in diameter.