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).
The wear of a bone grey fibre rubbing block after testing on car 5EX.
| Identifier | ExFiles\Box 69\1\ scan0380 | |
| Date | 30th June 1925 | |
| RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 X. 4646. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.Y.B. Order No. WB{Mr Brazier/Mr Bell} 25 Customer's No. X 4646 Bone Grey fibre rubbing block NO 2D (2nd sample) on 5 EX This rubbing block fitted to standd lever, on 5EX, has now completed 4122 miles to date. The measurements taken before and after this run show a maximum wear of .004". The block was observed to be in excellent condition. " Signed H.E.W. This Sheet must be filed on completion of the work. | ||