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 R. Bosch and U.S.A. Bosch magnetos in the laboratory with condition remarks.
| Identifier | ExFiles\Box 49\5\ Scan239 | |
| Date | 18th September 1923 | |
| X 4285 18.9.23. X.427. X.3916. X.4285. LIST OF R. {Sir Henry Royce} BOSCH AND U.S.A. BOSCH MAGNETOS IN LABORATORY. Name and Type. Number. Remarks. R.Bosch. Disposed of ZR.6. 1323138. One distributor securing strap missing. Kept " " 2571552. Contact Breaker Cover, and one H.T. Terminal missing. " " " 2571554. Complete. " " " 2571555. Complete. " ZF.6. 2490573. Complete. Small Bosch carried through experimental tests. U.S.A.Bosch. Kept B.6. 3002660. Broken down on H.T. collector brush. Disposed of ZR.6.Ed. {J. L. Edwards} 18. 3037338. Complete. " " 3363453. Complete. Kept ZR.6.Ed. {J. L. Edwards} 19. 3385100. Complete. Latest type U.S.A.Bosch ZR.6. Carried through experimental tests. Disposed of U.Z.6. 3363370. Complete. " " 3363371. Contact Points missing. EFC. {E. Fowler Clarke - Electrical Engineer} | ||