Request to modify the part numbers for existing tubes and valves.
| Identifier | ExFiles\Box 87\3\ scan0144 | |
| Date | 16th May 1935 | |
| To RHC. {R. H. Coverley - Production Engineer} x242 Hs {Lord Ernest Hives - Chair} /Les.10/KW.16.5.35. Will you please modify :- 2. Existing Tubes Ex.17558 to Hs. {Lord Ernest Hives - Chair} 1972. 2. Existing Valves Ex.17556 to Hs. {Lord Ernest Hives - Chair} 1973. Hs {Lord Ernest Hives - Chair} /Les. | ||
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).