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).
Fuel consumption test log showing fuel levels against mileage for a Straight Unit.
| Identifier | ExFiles\Box 44\3\ Scan085 | |
| Date | 30th November 1928 guessed | |
| Straight Unit. 1"/16 hole in bell plate. Approx. in tank. Mileage. Gauge. 12.75 362 12.75 362 0 367 9 372 11 11.65 382 (20) 10.75 392 10.25 Overnight 9.75 10.55 402 (40) 10.0 9.75 410 9.5 [Vertically written] Wet roads. Emptied tank 9.75 | ||