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).
Request to order six carbon filament lamps for use as charging resistances in the Experimental Electrical Department.
| Identifier | ExFiles\Box 63\1\ scan0120 | |
| Date | 19th January 1920 | |
| L.7 X.3035 S 6L1.c4 UC To C.O. from Ck.{Mr Clark} c. to Stores. Ck{Mr Clark}3/T19.1.20 X.3035 - RE CARBON FILAMENT LAMPS Will you please order up for use in the Expl. Elec. Dept., six 50 or 60 volt carbon filament lamps about 12 c.p., for use as charging resistances, these lamps to have caps for ordinary size holders. Received PH CK.{Mr Clark} 3/2/20. | ||