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 a speedometer for the Wraith II instrument board, referencing blueprint DW.168.
| Identifier | ExFiles\Box 168a\1\ img057 | |
| Date | 4th December 1936 | |
| c. Rm{William Robotham - Chief Engineer}/Wst. WST 6135 BY/RD.6/B.4.12.36. WRAITH II : INSTRUMENT BOARD. Will you please order Speedometer for Wraith II in accordance with blue prints of DW.168, attached herewith. BY/RD. | ||