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).
Conclusion of a letter discussing ongoing lamp tests and requesting modified glasses for extra beam spread.
| Identifier | ExFiles\Box 61a\2\ scan0426 | |
| Date | 10th December 1934 guessed | |
| -2- We are carrying on with our tests on these lamps but I do hope it is possible for you to make up a pair of modified glasses giving a little extra spread in the beam. Yours faithfully, FOR ROLL-ROYCE LIMITED. | ||