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).
Specification detailing modifications to Bentley matrices, including a height reduction and the deletion of the tunnel tube.
| Identifier | ExFiles\Box 150\3\ scan0076 | |
| Date | 12th November 1936 guessed | |
| -3- (2) Bentley matrices to our standard drawing but reduced in height from 24.50" to 21.550" and having the tunnel tube deleted, using same type of core as (1). Yours faithfully, FOR ROLLS-ROYCE LTD. | ||