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).
The maximum size of drawings for the blueprint machine at Clen Foundry.
| Identifier | ExFiles\Box 176\2\ img217 | |
| Date | 13th September 1940 | |
| Ev.{Ivan Evernden - coachwork} from Rn.{Mr Robinson} Sent foundry general Im.11/ML.13.9.40. Our blueprint machine at the Clen Foundry will take size V.{VIENNA} drawings but nothing larger. We would therefore be glad if you would keep your scheme drawings to this size or smaller, where practicable. RM.{William Robotham - Chief Engineer} | ||