Gyro Horizon Indicator, AN-5736-1, Sperry 656768 B-24 It displays total fuel on

It displays total fuel on two different scales

as confirmed in its parts list dated 1957

It has a serial # prefix of AF49

part number 671K-03

WW2 vintage aircraft clock with center knob

Gyro Horizon Indicator, AN-5736-1, Sperry 656768 B-24 It displays total fuel onHere is WWII era vacuum driven Gyro Horizon Indicator Type AN 5736 1. According to the Maintenance Interchangeability Cross Reference Charts of the Air Forces US Army dated Dec 1943, this Gyro Horizon was ubiquitous in its use, appearing in bombers B 17, B 24, B 25 and others, as well as fighters P 38, P 40, P 47, and P 51. The knobs function. The center knob adjusts the indexing indicator for the view angle of the pilot. The caging knob pulls out and