Blueprint detailing a cross-section of a component, comparing a 'usual reach' with a 'suggested reach'.
| Identifier | ExFiles\Box 162\3\ img215 | |
| Date | 12th September 1940 guessed | |
| SUGGESTED REACH USUAL REACH .675 +.15 | ||
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).