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 bone grey fibre rubbing block.
| Identifier | ExFiles\Box 69\1\ scan0362 | |
| Date | 18th June 1924 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS. Bone grey fibre rubbing block NO 2D (2ND Sample) X 4646 | Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. | |-----------|-----------|-----------|------------------------------------------------------------------------|----------------------|-----------------------|----------------|--------------| | 28-8-24 | 5 EX | | Fitted to standard lever. Dimensions top .261" bottom .259" | 2871 | | 14-5-25 9220 | | | 30-6-25 | " | | Dimensions after 10000ms. .257 top .255 bottom | | 2284 | 11122 | 11122 | | | | | Max wear .004" | | | | | 15 X 4646 18.6.24. | ||