Aircraft tool ID?

Some modern (ish) aircraft still have drawings for specialist tools that are relatively easy to manufacture locally.

I can’t really argue with any of that but the original poster said that his uncle ‘joined the Royal Navy in 1947 as an apprentice and ended up as an Aircraft Artificer’. This could be a legacy tool originally designed for earlier engines (not many Bristol engines were supercharged in the 1920s) but one that was found perfectly good for use on Centaurus engines in the 1950s and tools that work tend to go unchanged for long periods.

The part number doesn’t really tell us much (apart from that it is definitely for Bristol engines); I have a service book for Bristol Jupiter engines that has a list of service tools but I don’t think the part numbers are sequential so this tool cannot be ‘dated’ by its number. One great thing about the tool section in the book is that it has drawings allowing the engine fitter to make some of the service tools!

Post number 8 in the original forum also gave what he believed was the oiler manufacturers name…
Benton & Stone (Enots)
Enots are still listed as brassware manufacturers esp for compressed air eqpmt (part of Norgren group now),a ‘Blower’ is a type of compressor so maybe poster No 8 had it correct

The term blower was very popular before the war in motoring circles when referring to a supercharger.
The famous Le Mans winning Bentleys are almost universally known as ‘blower Bentleys’.

Somebody on the original forum posted that it is a prewar Bristol engine tool (post 8).
‘Blower’ was not an unusual alternative/diminutive name for superchargers prewar.

Part number FB19160 would make it a Bristol aero-engine tool so for the FAA in 1947-1950 I would say it was for a Sea Fury Centaurus engine. The use of the word blower for supercharger is a bit strange though.