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).
Using the Exide Hydrometer as an alternative for the American Luthy Hydrometer.
| Identifier | ExFiles\Box 44\5\ Scan069 | |
| Date | 19th November 1923 | |
| X.3741 Mr Booth. c. EFC. BY1-P19.11.23. X.3741. HYDROMETERS. It has been agreed in the event of us not being able to obtain Luthy Hydrometers in time from America, that we shall use the Exide Hydrometer. The latter is of glass, but since we cannot obtain one made from celluloid in this country we have no option in the question of material when the Luthy is not available. Will you kindly add a note to the Part List stating that the Exide Hydrometer can be used alternatively with the Luthy when the latter is not available. BY.{R.W. Bailey - Chief Engineer} | ||