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).
Letter to Doctor Helmore regarding the finalisation of a 40 mm gun installation in a night fighter.
| Identifier | ExFiles\Box 176\1\ img160 | |
| Date | 21th April 1941 | |
| Rm.{William Robotham - Chief Engineer}4/ML. 21.4.41. Doctor Helmore, Ministry of Aircraft Production, Thames House, Millbank, LONDON. Dear Helmore, I have now managed to arrange that I shall be at the Works for certain on Wednesday and we shall also be finalising the installation of the 40 mm. gun in the night fighter, so that your contributions towards the discussion would be very helpful. I hope therefore, that you will be able to make Derby on that day. Yours sincerely, | ||