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 Speedometer Drive.
| Identifier | ExFiles\Box 169\1\ img008 | |
| Date | 14th February 1929 | |
| (8) RHC{R. H. Coverley - Production Engineer}8/MS14.2.29. Speedometer Drive - L.O.P. G.76750. RHC.{R. H. Coverley - Production Engineer} | ||