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).
Arrangement for a semi-standard hydrometer to be returned for accuracy checks.
| Identifier | ExFiles\Box 44\5\ Scan105 | |
| Date | 5th November 1929 | |
| By/Mtn. from EFC. X3741 EFC2/AD5.11.29. X.3741. HYDROMETERS. Please refer to our EFC10/T6.3.28. We arranged for one hydrometer to be used as a semi-standard for checking on production. This was to be returned to us for checking once every two months, but we have seen nothing of it. We consider it desirable to keep a check on the accuracy of hydrometers which are supplied to us, so shall be pleased to hear what arrangements you will make regarding this. EFC. | ||