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).
Order for 2 dozen Tecalemit filters for experimental chassis unit test beds.
| Identifier | ExFiles\Box 136\3\ scan0032 | |
| Date | 31th January 1939 | |
| /139 To Roy.{Sir Henry Royce} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. O/JWH. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}31.1.39. Will you please order 2 doz. Tecalemit filters of the type O.F.1054, type 123/12, for use on the experimental chassis unit test beds. O/N. 555. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||