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 for the production of half bearing castings.
| Identifier | ExFiles\Box 115\5\ scan0063 | |
| Date | 2nd July 1938 | |
| JSW/KES 2nd July, 1938. Price of making half Bearing casting without material but with overheads ...... 3¾d each Price of material with depreciation and melting costs ........................ 1/7d per lb. Heat Treatment of Bearings for 12 hours ..... ½d per lb Heat Treatment of Bearings for 24 hours ..... ¾d per lb Weight of 8.6 litre half bearing............. 10.oz. | ||