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 Mr. Brock to wind a coil bobbin to specific standards for comparison with experimental coils.
| Identifier | ExFiles\Box 69\1\ scan0112 | |
| Date | 7th February 1928 | |
| X8710 To Mr. Brock. EFC1/T2.7.28. We hand you herewith coil bobbin which we would like you to wind as standard, i.e. 22 S.W.G. primary and 18000 turn secondary. We should like this done as soon as possible as we wish to use this coil as a representative present standard coil for comparison with other experimental coils we have for test. We can ourselves supply the case. EFC. O/N.54733. | ||