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).
Impracticality of a permanent experimental fitting compared to a standard volt-meter.
| Identifier | ExFiles\Box 59\1\ Scan121 | |
| Date | 9th March 1927 guessed | |
| -2- quite a useful scheme experimentally, but I do not think it would justify its existence as a permanent fitting to the extent that a volt-meter and pair of wires would. Probably also a volt meter would be more quickly read. A flexible tube of rubber or otherwise is not a very desirable thing on a car, if it can be avoided. PN.{Mr Northey} PN{Mr Northey} [Upside down watermark/text from reverse] MADE AT CROXLEY 1804 | ||