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).
Handing over of updated Watford magnetos for fitting to an F.39 engine for type testing.
| Identifier | ExFiles\Box 43\4\ Scan314 | |
| Date | 3rd December 1930 | |
| X4021. 3.12.30. X.4021. WATFORD MAGNETOS TYPE SP.{Mr Spinney}12-2 NOS. 98033/4. These magnetos, duly fitted with new armature and thus brought up-to-date, have been handed over for fitting to F [REDACTED] engine F.39 for type test. EFC. | ||