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).
Use of the 25/30 nomenclature for the 20/25 and Bentley models.
| Identifier | ExFiles\Box 101\4\ scan0144 | |
| Date | 13th December 1935 | |
| Hs{Lord Ernest Hives - Chair} To E.{Mr Elliott - Chief Engineer} from Sg.{Arthur F. Sidgreaves - MD} Copy to Wor.{Arthur Wormald - General Works Manager}Hs.{Lord Ernest Hives - Chair}EW [strikethrough]Mx.{John H Maddocks - Chief Proving Officer}RHC.{R. H. Coverley - Production Engineer}Sft.{Mr Swift}C.[/strikethrough] XSDDA? re Large Bore 20/25 and Bentley, Sg{Arthur F. Sidgreaves - MD}10/E13.12.35 Thanks for E.5/HP.11 12.35. The suggestions made are quite in order. Whether we shall eventually change the nomenclature of the 20/25 has not yet been settled but there is no harm in using 25/30 for internal purposes. Sg.{Arthur F. Sidgreaves - MD} | ||