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).
Heavily faded and damaged technical drawing with faint outlines of mechanical components.
| Identifier | ExFiles\Box 90a\4\ Scan206 | |
| Date | 16th May 1936 guessed | |
| Illegible due to extreme fading and damage. | ||