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).
Letter to Vol-Crepe Limited confirming the weight of 1/2 inch felt material.
| Identifier | ExFiles\Box 138\1\ scan0152 | |
| Date | 1st April 1935 | |
| 4634 Exptl. Dept. HS{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}4/KW. 1st April, 1935. Messrs. Vol-Crepe Limited, Glossop, Derbyshire. For the attention of Mr. Crabtree. Dear Sirs, This is to confirm that the weight of the 1/2" felt material we are using at present is 3 1/2 ozs. per square foot. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||