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 showing a standard carburetor, labeled as Figure 4.
| Identifier | ExFiles\Box 66a\2\ scan0150 | |
| Date | 1st February 1927 guessed | |
| FIG 4. (STANDARD. CARB.) | ||