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).
Production test specification for an ignition coil.
| Identifier | ExFiles\Box 70\4\ scan0028 | |
| Date | 7th April 1930 | |
| X8781ce Sft{Mr Swift}/Mr Brock. from EFC. c. By.{R.W. Bailey - Chief Engineer} EFC1/AD7.4.30. X.8712. IGNITION COIL TO D.72503. X.8781 cl. X.6781 cl. Herewith specification of production test for the above type coil. EFC. | ||