Anti-Aircraft Artillery Range Indicator, US Navy, Mark 1, 1944 Cold War

Anti-Aircraft Artillery Range Indicator, US Navy, Mark 1, 1944 Cold WarHere is a WWII USNavy Range Indicator, Antiaircraft Gunnery, Mark 1. It is a hand held finder used to ascertain the range of an enemy aircraft based upon its known wingspan. They were only as accurate as the observers knowledge of aircraft identification and of course, how rapidly he could spot, identify, track and calculate the information to pass this on to the gunners (usually manning 20mm to 40mm guns or a 3" gun mount typically used on auxiliary

The B-7 Engine Gage Unit displayed 3 metrics with one instrument:  Oil temperature (from 0-100 deg C)

or transport aircraft such as the C-46 or C-47

The knob rotates the pointer along its axis to select the desired course heading marked along the perimeter scale

Our Elgin A-8 has definitely seen a bit of service

the year when the Honeywell C-1 system became the standard autopilot system for large multi-engine aircraft

The white pointer indicates the aircraft altitude and the outer knob adjusts for barometric pressure

landing gear

This indicator

This item has a serial number prefix of AF-52

The glass is clear and the lettering distinct

which told him how far he was from the point of touch-down

plotting its change in location with the timed plotting mechanism to determine aircraft course