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).
Test report on a bone grey fibre rubbing block after 10,090 miles of use.
| Identifier | ExFiles\Box 69\1\ scan0381 | |
| Date | 17th June 1925 | |
| RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.b Order No. W320 Customers No. X4646 Bone grey fibre rubbing block (2ND Sample) NO2E fitted to standard lever on 8 G III This block has completed to date 10090 miles on 6F68 and 8GIII and has been duly measured to ascertain the amount of wear. This was found to be .012". The block was in good condition this material not fraying like the bakelite blocks. NOTE. This rubbing block and lever is still on 8GIII Signed H.E.W. This Sheet must be filed on completion of the work. | ||