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).
Laboratory report on the calibration of a galvanometer and couple, showing temperature readings.
| Identifier | ExFiles\Box 33\4\ Scan236 | |
| Date | 10th May 1927 | |
| Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X1782 Hll/EA10.5.27. Laboratory. Report No.L818. Re Galvanometer and Couple brought in by you for calibration today. As requested we have tested the above as follows :- Galvanometer Reading. Temperature°C. 2.5 29 5.0 48.5 7.5 61.5 10.0 83.5 Hl. Hl | ||