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).
List of all magnetos detailing their type, number, and test status.
| Identifier | ExFiles\Box 4\5\ 05-page170 | |
| Date | 31th March 1921 | |
| EPC. March 31st. 1921. X.430 X.430. LIST OF ALL MAGNETOS. Number available. | No. | Type | Remarks. ------------------|-----|------------|--------- | | Magnetos. | 1 | 4010 | Watford E.6. | Obtained from expl. shop for the purpose of testing tungsten points. Broke down after short run. 4 | 40886, 44258, 45168, 45638 | Standard. Watford E.6. | Two carried through expl. tests. Two borrowed from stores for further tests on Watford E6. 1 | 46988 | Watford E.O.6a. | Taken off 49-GB for further tests on old E.O.6 Watfords. 1 | 48919 | " E.O.6b. | Latest type received and carried through expl. tests. 1 | 2571556 | R.Bosch Z.R.6. | Carried through expl. tests. 1 | 3037338 | U.S.A. Bosch Z.R.6. | Run for a short period with tungsten points. 1 | 3002680 | U.S.A. Bosch B.6. | Broke down on expl. tests. 2 | 3363370, 3363371 | U.S.A. Bosch DEZ.6. | Received from America, and awaiting test and report. 1 | 8263 | Conner C.M.1 | Carried through expl.tests. 1 | 311941 | B.T.H. F.M.6. | " " " " 1 | 718238 | Dixie Aero 648 | " " " " 1 | 628380 | Eisemann G.N.6 | " " " " Contd. THE HAWKSHEAD PRESS, DERBY. F.O.1158. 3/21. 50. | ||