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 to obtain a replacement pen for an Evershed and Vignoles recording voltmeter.
| Identifier | ExFiles\Box 165\3\ img076 | |
| Date | 9th July 1930 | |
| X1330. Roy.{Sir Henry Royce} from EFC. EFC5/AD9.7.30. X.1330. RECORDING VOLTMETER. Will you please obtain one pen for our Evershed and Vignoles recording voltmeter 0 - 25 volts No.62232. The present pen is now worn and draws too coarse a line making it rather difficult to calculate from the curves. EFC. | ||