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).
Confirming a modification to the instructions for the auto switch unit.
| Identifier | ExFiles\Box 59\1\ Scan211 | |
| Date | 12th December 1927 | |
| To BY/RD. from EFC. .X4008 EFC9/T12.12.27. c. RHC.{R. H. Coverley - Production Engineer} RE AUTO SWITCH UNIT X4008. This is to confirm that you will modify the instructions for the remaining two of the three units to affect the provision of much more rigid fixed contact point supports. EFC. | ||