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).
List of insulating materials used on electrical units.
| Identifier | ExFiles\Box 24\2\ Scan137 | |
| Date | 22th April 1921 | |
| To EFC. X.1109 BY/WER7/EF22. 4. 21. X.1109 INSULATING MATERIAL USED ON ELECTRICAL UNITS. With reference to your request for a complete list of the above material, kindly receive herewith attached blue prints of a list which we have compiled. This includes all the Electrical Units manufactured by R.R. with the exception of the Distributor (for details of this see Mr. Shelton "E" Dept. D.O.). BY/WER. W.R. | ||