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).
Electrical experimental record sheet for a Watford Sleeveless magneto, number 98201, type EW6.
| Identifier | ExFiles\Box 65\3\ scan0121 | |
| Date | 19th April 1926 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 7791 Watford Sleeveless magneto NO 98201 Type EW6 Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. 25-5-27 | Lab | | Received from BY.{R.W. Bailey - Chief Engineer} 26-5-27 | '' | | Preliminarily reported in WC 26 27-5-27 | '' | 10-6-27 | Tested completely to experimental schedule results recorded on form 10-6-27 | MX{John H Maddocks - Chief Proving Officer} | 16-6-27 | Handed to MX{John H Maddocks - Chief Proving Officer} for Silence tests on chassis. | | | 500 | 500 16-6-27 | Lab. | 18-6-27 | Returned to lab. 18-6-27 / 5-7-27 | 10EX | 9.8.27 | Fitted to 10EX. Speedo fitted | 3544 | 4618 | 1074 | 1574 9.8.27 | 9EX. | 6-9-27 | Fitted to 9EX. (A.J.L) | 6234 | 7551 | 1317 | 2891 6-9-27 | lab | 6-9-27 | Removed & returned to lab. 6-9-27 | Messrs Norths | 1-11-27 | Returned to makers. 19.4.26. | ||