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 sheet for three manufacturing components (B.2, B.3, B.50) with material, labour, and on-cost details.
| Identifier | ExFiles\Box 98\2\ scan0134 | |
| Date | 13th August 1938 | |
| -5- Rm.{William Robotham - Chief Engineer}3/JH.13.8.38. B.2. Metal shop. Material 5 - 0 - 0. labour. 16 - 9 - 2. Body makers. 26 - 11 - 4. 16 - 11 - 6. Smiths. 1 - 0 - 0. 2 - 2 - 10. Bgt. out Panels. 26 - 0 - 0. 19 - 10. Wards Panels. 12 - 8. 2 - 0 - 0. Odds etc. metal. 7 - 0 - 0. 66 - 4 - 0. 38 - 3 - 4. B.2. SHELL % OF WHOLE - 47%. B.3. Labour £18 - 12 - 0½. Material. £24 - 17 - 1. £43 - 9 - 1½ On cost. 18 - 12 - 0½ £62 - 1 - 2. B.3. SHELL % OF WHOLE 62.05/227.3 27.3% B.50. Labour 11 - 10 - 11½ Material 18 - 0 - 8 On cost 11 - 10 - 11½ £41 - 2 - 7 % SAVING 38% B.50 SHELL % OF WHOLE 41.125/140.05 29.4% | ||