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).
Concerning piston rings and a lubricant chart, with handwritten notes about vehicle component checks.
| Identifier | ExFiles\Box 37\2\ scan 168 | |
| Date | 17th November 1931 | |
| [Typed text, upside down] TO Mr. Coventry. FROM DRC. RE. LUBRICANT CHART - X.3182 Will you kindly say what has been done with the enclosed letter, enquiry from Mr. Wethered, also to be returned. to place an order for piston rings for same. [Handwritten text] Clock notes Operation Lamp revs Standard Brakes springs Ashorne. Driving Balance Starting Petrol Consumption Oil pressure per Clarke E.L.C. OK | ||