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).
Unsatisfactory material (Ubas instead of Swedish Iron) for an Ignition Relay Switch iron core.
| Identifier | ExFiles\Box 168a\2\ img167 | |
| Date | 10th September 1935 | |
| RHC.{R. H. Coverley - Production Engineer} From Ha/Wst. Ha/Wst.8/MA.10.9.35. IGNITION RELAY SWITCH. The iron core D.4342 of this switch has been made in Ubas instead of soft Swedish Iron as called for on the drawing. This Ubas material is very unsatisfactory and we should be glad if you will arrange for two further cores to be made for us as quickly as possible in soft swedish iron. Ha/Wst. | ||