Turn and Bank Indicator Pioneer Type C635C-84 Aerial Refueling it is in fine condition

it is in fine condition given its apparent age

Measures ~4 inches triangularly by ~2 inches deep

" The scale on the Slide Bar is graduated from 0 to 150

The dial markings are clear and precise

Shows aircraft deviation from the selected course

Turn and Bank Indicator Pioneer Type C635C-84 Aerial Refueling it is in fine conditionThis pneumatic Turn and Bank Indicator, Type C635C 84, is very similar to early WWII era Turn and Bank Indicators also made by Pioneer Bendix as appeared in military aircraft of the US Army Air Corps and US Navy. However, there does not appear to be any markings of either service branch, nor evidence of its year of manufacture. The design of the mounts of aircraft instruments evolved during early WWII from the dog ear style as seen on this instrument