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 for test results on Watford & B.T.H. aero magnetos conducted at Farnborough.
| Identifier | ExFiles\Box 43\4\ Scan222 | |
| Date | 6th February 1930 | |
| X4021 RG.{Mr Rowledge} from EFC. EFC5/AD6.2.30. X.4021 X.3832. WATFORD & B.T.H. AERO MAGNETOS. Would it be possible to obtain results of tests made under the direction of Dr. Bairsto at Farnborough on the latest type BTH. and Watford aero magnetos? This would be regarded as for our own information only. EFC. | ||