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 detailing a modified needle for a starting carburetter.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan024 | |
| Date | 14th May 1930 guessed | |
| STARTING CARBURETTER LE C 2731 MODIFIED NEEDLE WITH 30° SEAT. NEEDLE VALVE SEATING .031" MAX RESTRICTION HOLE | ||