Pencil drawing of a mechanical arm or lever with dimensional callouts and a detail view of a tapered and threaded end.
| Identifier | WestWitteringFiles\E\November1920\ Scan29 | |
| Date | 1st November 1920 | |
| [ "7.5"", "3.25"", "THRD & TAPER TO BE SAME", "DIA AT", "SMALL END", "C/11/20" ], | ||
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).