Attitude Indicator, ARU 2B/A, US Air Force ME-262 This is a WWII-era Formation

This is a WWII-era Formation Stick

as used in the Airborne Radio Navigation System AN/ARN-11 (see spec sheet in photo gallery) during and after WWII in both military and commercial aircraft

The USAF type is S3A

The knob at the top of the indicator is actually a hex key used to adjust deviations in readings on the Master Compass

The World War II T-1 bombsight system was originally designed by the British (as the Mark XIV bombsight) and first entered service in 1942

Attitude Indicator, ARU 2B/A, US Air Force ME-262 This is a WWII-era FormationThis is a Cold War Vietnam War era Attitude Indicator type ARU 2B A, made by Sperry, part number 1784163 901, MIL I 27193A. This instrument appeared on the pilot's and co pilot's instrument panel of a number of US Air Force and US Navy aircraft such as the Lockheed C 130 Hercules Transport. This unit has a service label from McClellan Air Force Base in Sacramento CA dated 1987. The purpose of the instrument is to rapidly indicate to the pilot the