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).
Cost breakdown of Priming Device Parts in stock which are to be superseded by the Pilot Jet.
| Identifier | ExFiles\Box 74\2\ scan0084 | |
| Date | 7th July 1922 | |
| My/JW/N1/139a/M7.7.22. The value to R.R. of Priming Device Parts in stock at date (5.7.22) which would be superseded by Pilot Jet, is as follows:- Rough material R.R. cost 16. 0. 4 Part machined " " " 69. 8. 6 Finished material " " " 314. 18. 0 £400. 6. 10 RECEIVED AUG 11 1922 Hs{Lord Ernest Hives - Chair} My/JW. | ||