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).
Rating test graph showing load versus deflection for engine foot rubbers supplied by Dunlop.
| Identifier | ExFiles\Box 14\5\ Scan042 | |
| Date | 2nd January 1929 | |
| RATING TEST. F.78114 Engine Foot Rubbers. Supplied by Messrs. Dunlop 2.1.29. LOAD LBS. DEFLECTION INS. | ||