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).
Drawing H.Sch.4848, showing lightening holes in the top and third speed sliding piece for the Wraith II Gearbox.
| Identifier | ExFiles\Box 8\11\ 11-page032 | |
| Date | 8th July 1936 | |
| GRY{Shadwell Grylls} x101/11 628 H.S.S. C. H.S.S. H.H. A.H.E. HS{Lord Ernest Hives - Chair}/rm.{William Robotham - Chief Engineer} E/HDY.{William Hardy}1/RP.8.7.36. Wraith II Gearbox. We send herewith H.Sch.4848 which shows the lightening holes in the top and third speed sliding piece. E/HDY.{William Hardy} | ||