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 'B' series production Wraith B.V. exhaust system.
| Identifier | ExFiles\Box 99\1\ scan0183 | |
| Date | 22th March 1939 | |
| 423 Rm{William Robotham - Chief Engineer}/ c. Rm.{William Robotham - Chief Engineer} Roy{Sir Henry Royce}/Les 17/ER 22.3.39. Cost of B.V. Exhaust System. The attached list shews the material cost and labour cost of 'B' series production Wraith exhaust system. This gives the factory cost of £12/13/6d. We note, that besides such items as the downtake-pipe and the intermediate-pipe, which cost approximately 15/- each, that the cost of the lagging covers amount to approximately 14/6d. and also the cost of the jubilee clips are as much as 14/5d. As soon as you have finished with these figures, we should like them to be returned. Roy{Sir Henry Royce}/Les.{Ivan A. Leslie} | ||