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 showing a side view of a mechanical component with dimensional annotations.
| Identifier | ExFiles\Box 168\3\ img131 | |
| Date | 5th October 1929 guessed | |
| 7/16 2 1/32 2 1/2 3/16 5/16 2 9/16 7 7/16 3 11/16 D.R. LTD West' | ||