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).
Confirming a material analysis of two .4 carbon push rods due to variations in Brinell hardness.
| Identifier | ExFiles\Box 158\4\ scan0263 | |
| Date | 22th September 1938 | |
| 1360 To H1/Mr.Squires. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}5/MH.{M. Huckerby}22.9.38. This memo to confirm that you will make a material analysis of the two .4 carbon push rods which we have handed you. The reason this is required is that the Brinell on the two rods varies considerably. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||