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).
Comparative cost analysis table for Thermoid and Ferodo products.
| Identifier | ExFiles\Box 148\5\ scan0241 | |
| Date | 10th December 1937 guessed | |
| Handwritten top right: 1260 Typed title: COMPARATIVE COSTS. Typed subtitle: THERMOID - FERODO. Handwritten: $ = 5/- First Table: Column Headers: [Part No.], Drilled - Thermoid +, 33% Duty +, Freight 1d., Ferodo MR. drilled. Row 1: GB.750, .382, .508, .548, .605 Row 2: 751, .812, 1.080, 1.160, 1.375 Row 3: 752, .722, .961, 1.041, 1.25 Row 4: 754, .427, .568, .608, .646 [Handwritten initials 'Rm{William Robotham - Chief Engineer}' are circled over the table] Second Table: Column Headers: [Part No.], Drilled, [Cost], [Cost], Ferodo ML or RL undrilled Row 1: GW.371, 1.23, 1.640, 1.720, 2.437 Row 2: GW.685, 1.67, 2.220, 2.300, 3.229 Handwritten at bottom: E.R.A's | ||