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).
The testing of an Exide hydrometer, noting considerable improvement and the return of the instrument.
| Identifier | ExFiles\Box 44\5\ Scan087 | |
| Date | 7th May 1927 | |
| XJ741 To BY/Cgh.{W Clough} from EFC. EFC2/T7.5.27. With reference to the Exide hydrometer recently submitted to us for test, attached please find copy of my assistant's report JC.81, & from which you will see that we consider this to show considerable improvement over previous types. We return the instrument herewith. EFC. | ||