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).
Blueprint of an aircraft's wing planform detailing its armament specifications.
| Identifier | ExFiles\Box 176\1\ img036 | |
| Date | 17th July 1940 guessed | |
| 5 - 10.7 M/M GUNS. 220 ROUNDS OF AMMUNITION PER GUN RATE OF FIRE 890 ROUNDS PER MINUTE PER GUN MUZZLE VELOCITY 2650 FT/SEC. | ||