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).
For an attached list detailing specific gravity, distillation tests, and octane values of various petrols.
| Identifier | ExFiles\Box 27a\4\ Scan264 | |
| Date | 8th December 1933 | |
| X1282 To Rg.{Mr Rowledge} from ROY.{Sir Henry Royce} c. to Hs.{Lord Ernest Hives - Chair} c. to Hl. ROY{Sir Henry Royce}2/MG8.12.33 PETROL Attached is detailed list showing: (a) Specific Gravity at 60°F.{Mr Friese} (b) Distillation Tests (c) Octane values of various Petrols. You will note the high Octane values shown for the Regent Petrols, i.e., those imported by the Trinidad Leaseholds Ltd ex Trinidad (i.e. British possession). I understand these Regent Petrols are being used extensively by the Bus Companies in this country. ENCLOSURE. List. ROY.{Sir Henry Royce} ENCLOSURE Nº210 | ||