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).
Extract detailing the production test results for specific Watford magnetos.
| Identifier | ExFiles\Box 48\2\ Scan252 | |
| Date | 19th March 1925 | |
| X8796 Extract from WA. {Mr Wallis} 118 of 19.3.25. WATFORD E06d MAGNETO No.83970. & WATFORD E06c MAGNETOS NOS. 73953 and 73955. No.73970. Production tests to our latest specification have been completed on the above magneto. No.73970. (60° range - rotation). passed the test in every item. | ||