From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint diagram of a float chamber assembly with various valves and connections.
| Identifier | ExFiles\Box 40\4\ Scan360 | |
| Date | 27th February 1933 guessed | |
| SUCTION CONNECTION PETROL CONNECTION SUCTION VALVE (OPEN) PETROL INLET Toggle Lever SPRING VALVE LEVER FLOAT DROP VALVE (CLOSED) POSITION | ||