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).
Cross-reference note for information relating to an ignition coil design with paxolin tubes.
| Identifier | ExFiles\Box 69\2\ scan0035 | |
| Date | 31th December 1930 | |
| X.8712. 31.12.30. For further matter relating to Ignition coil to D.72503 design with paxolin tubes see X.6058. | ||