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).
Job cost sheet for decarbonisation work, detailing labour hours, rates, and total cost.
| Identifier | ExFiles\Box 107\2\ scan0058 | |
| Date | 3rd May 1938 | |
| Job decarb B 40 BN{W.O. Bentley / Mr Barrington} 3/5/38 Striker Fitter hrs Rate semi hrs Rate £ s d 9 1/2 1.7 9 1/2 7d 15 . 0 . 1/2 5 . 6 . 1/2 Carburetter work 3 1/2 1.3 4 . 4 . 1/2 Test 2 1.8 3 . 4 adjust tappets after test 1 1.0 1 . 0 16 9 1/2 £ 1 . 9 . 3 1/2 Total labour hrs 25 1/2 | ||