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).
Agreed-upon thickness for Ebonite separators.
| Identifier | ExFiles\Box 54\5\ Scan122 | |
| Date | 26th September 1929 | |
| E.F.B. X4655. J.D.28. 26-9-29. X4655. Re Ebonite separators. Looking through the files I find that we finally agreed on the .4 m/m ebonite as against .6 m/m on the score of the charging RD. Later a compromise of .5 m/m was suggested by us, but Messrs P&R seemed unanimous in the opinion that .4 m/m was sufficiently thick, & so the matter has rested at that. Mr Minchin pointed out to me yesterday that they would take care & measure all ebonite separators & fit only those up to & over .4 m/m.{Mr Moon / Mr Moore} RJ. | ||