F-84 A-1B Gunsight Leveling Instrument 30X19847 FJ-2 The indicator has labels showing

The indicator has labels showing service at US Naval Air Station Pensacola in January 1955 (see white label on side and blue stamp on back)

The range of the indicator is from 80-70 knots and 0

part number 435-62-0001

made by the US manufacturer Sperry in New York

but its pure speculation

F-84 A-1B Gunsight Leveling Instrument 30X19847 FJ-2 The indicator has labels showingHere is an interesting Cold War Korean War era instrument kit used to level the A 1B Gunsight in the US Air Force Republic F 84 D and E Thunderjet fighter (and later versions F and G, apparently after this kit was labeled) before flight service. The A 1B sight was a gun bomb rocket sight used in versions of the F 84 and F 86 jet fighters. In its original wooden case, the instrument consists of two main components: a sighting tube, and a bracket to