Attitude Gyro Horizon Indicator, F9F Cougar & HUP Retriever, Sperry 672740 Peggy Bomber It has a detector unit

It has a detector unit

25in diameter and ~3in deep

and may have been installed aside others like it in a large multi-engine piston-powered aircraft

maximum 2000 ft/minute

See photo of the location of the instrument on the co-pilot's side of the instrument panel from the Flight Manual dated 1946

Attitude Gyro Horizon Indicator, F9F Cougar & HUP Retriever, Sperry 672740 Peggy Bomber It has a detector unitThis is a 1950's era Attitude Gyro Horizon Indicator as used in the US Navy Marine Corps Fighter Jet Grumman F9F 5 Cougar and the HUP 1, 3 Helicopter, made by Sperry PN 672740 as a "fast erecting" gyro (as it fast as it could be in the early 1950's). It also has the USN stock # of R88 I 1331, linking it to the F9F 5 as seen in the F9F Flight Manual (see photo of page from manual dated 1955). The gyro was also named as a Type H 5, but is not labeled as