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).
Graph comparing the performance of Ferodo and Halo brake linings, showing the effects of temperature under a 20lbs load.
| Identifier | ExFiles\Box 26\4\ Scan196 | |
| Date | 7th July 1914 guessed | |
| COMPARISON OF FERODO & HALO BRAKE LININGS SHOWING EFFECTS OF TEMPERATURE. Halo Ferodo LOAD 20 Lbs. R.P.M of BRAKE DRUM 500 400 300 200 100 0 MINS 5 10 15 | ||