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).
Graph of automatic advance-speed characteristics for six production Bentley distributors.
| Identifier | ExFiles\Box 82\4\ scan0251 | |
| Date | 19th February 1936 guessed | |
| FILE X250 AUTOMATIC ADVANCE-SPEED CHARACTERISTICS OF SIX PRODUCTION BENTLEY DISTRIBUTORS DEGREES U48M U7BM R2BP U5BM U6BM T9BN{W.O. Bentley / Mr Barrington} DISTRIBUTOR SPEED | ||