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 distribution board with interchanged fuses.
| Identifier | ExFiles\Box 65\2\ scan0213 | |
| Date | 3rd December 1930 | |
| X7740. ELECTRICAL EXPERIMENTAL RECORD SHEETS. Distribution Board with B&C fuses interchanged Late: X7740. | Date on | Location | Date off | REMARKS | Miles reading start | Miles reading finish | Miles covered | Total miles. | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 6 Dec '29 | 18 EX | | In conjunction with sw-box with extended A contact. | 6362 | | 0 | 0 | | 21. May '30 | " | | OK, but fuse 8 noted only 2 strands | 17833 | 11471 | 11471 | | 3. June '30 | " | | " | 18479 | 646 | 12117 | | 27 Nov '30 | " | | Fuses 5 & 6 blown (body of) | 20028 | 1549 | 13666 | | 3 Dec '30 | Shop. | | Replaced by half-charge type. Concluded. | " | 0 | 13666 | | ||