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).
Request for a hydrometer to measure the specific gravity of petrol and accumulator electrolyte, preferably a single instrument for both jobs.
| Identifier | ExFiles\Box 44\5\ Scan029 | |
| Date | 19th August 1918 | |
| From E.{Mr Elliott - Chief Engineer} Copy to EFC. X.374T 19th August, 1918. E3/G19818. RE HYDROMETER FOR MEASURING SPECIFIC GRAVITIES OF PETROL AND ACCUMULATOR ELECTROLYTE. Would you kindly send Mr. Royce, in accordance with his wishes, a hydrometer for measuring the specific gravity of petrol, and also for measuring the same characteristic of battery acid. I understand Mr. Royce would like one instrument to do the two jobs, but if you cannot obtain this we must have one for the petrol and a separate one for the acid. Reed. | ||