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).
Difficulty of obtaining 12-volt half-watt lamps with a low candle power.
| Identifier | ExFiles\Box 38\3\ Scan287 | |
| Date | 21th January 1921 | |
| To Rs.{Sir Henry Royce's Secretary} from EFC. X 3362 EFC4/T21.1.21. X.3362 - W.W. LIGHTING INSTALLATION. X/11/- I have your note Rs{Sir Henry Royce's Secretary}1/G18.1.21, but you will have seen from my EFC1/T20.1.21 that it appears quite impossible to obtain 12 volt half watt lamps of such a low c.p., in fact we have never yet seen or heard of lamps of lower than 24 watts which corresponds to 48 c.p. if they are true half watt lamps. To make sure, we are asking the Order Office to confirm with the E.E.Company and the B.T.H. Co. that the position is not altered today. EFC. | ||