Air Speed Indicator (ASI) Civilian Type Air Speed Indicator (ASI) Civilian Type
By S. Smith & Sons. Of the type fitted to most pre-war civilian aircraft. It is 3" diameter, serial no. 763 and was overhauled in 2006, being boxed since.
It will require check calibrating before use. With it comes a spare dial to convert it to Km/Hr if required. Now extremely rare. £350.00