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).
Specification memo with a diagram for 20 HP rubber engine feet.
| Identifier | ExFiles\Box 104\1\ scan0019 | |
| Date | 27th September 1928 | |
| To FHC. from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} X5005 Hs{Lord Ernest Hives - Chair}/Rml/LG27.9.28. 20 HP. RUBBER ENGINE FEET. Please note that the correct rubbers for all 20 HP. engine mountings are :- Type Softest Avon at present in Stores. Dimensions : 1.250" .150 1.00 RAD. .150 .175 | ||