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).
Summarising tests on an Exide Hydrometer Type S1 and returning the instrument.
| Identifier | ExFiles\Box 44\5\ Scan078 | |
| Date | 15th May 1925 | |
| X.3741. To BY/C. from EFC. EFC2/T15.5.25. EXIDE HYDROMETER TYPE S1. X.3741. We have now made tests on this hydrometer and attached please find my assistant's report JB.103., from which you will see that apart from the obvious delicacy of the glass float, and one minor point made clear in the report, this hydrometer is considered to be generally satisfactory. We return the instrument herewith. EFC. | ||