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 table for different nozzle dimensions, including bore and length.
| Identifier | ExFiles\Box 36\1\ scan 033 | |
| Date | 15th February 1916 | |
| EFC4/T17417 Contd. -2- Nozzle Bore Length. D2 72 3/8" 2 1/2" D3 73 3/8" 3 1/2" D4 74 3/8" 4 1/2" ___ ___ ___ EFC. R.{Sir Henry Royce} R.{Sir Henry Royce} 235 (200 T) (S. C. 536. 15-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1547 | ||