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 comparison document for various gearbox models, including material, labour, and burden costs.
| Identifier | ExFiles\Box 148\2\ scan0108 | |
| Date | 18th January 1939 | |
| 1260 COPY. Please file. Cost To Rm. {William Robotham - Chief Engineer} Roy {Sir Henry Royce} /Les.2/ER.18.1.39. Cost of Gear Boxes. (Including change gear mechanism and Damper control) | | Bentley 50. | Bentley 'M' Series. | Wraith 'B' series. (1-100) | |---|---|---|---| | Material | £11.4.11 | £14.16.9 | £14.19.11. | | Labour | £11.19.2 | £20.10.3 | £18. 6.11. | | Burden | £26.18.1 | £46. 3.0 | £41. 5. 7. | | Total. | £50. 2.2 | £81.10.0 | £74.12. 5 | | Servo Lab & Mat | 4.3.0 | 7.5.9 | 7.5.9 | N.B. On all boxes the following applies:- 5% on Material. 5% on Labour. 225% on Burden. Roy {Sir Henry Royce} /Les. | ||