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 illustrating a slotted pipe assembly.
| Identifier | ExFiles\Box 66a\1\ scan0168 | |
| Date | 2nd February 1927 guessed | |
| Slot 7.000" x .425" FIG. 1. (Slotted Pipe) | ||