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 Ph.III Clutch Borg & Beck centre plates for experimental and production orders.
| Identifier | ExFiles\Box 93\3\ scan0064 | |
| Date | 2nd December 1935 | |
| X312 2nd Dec. 1935. Ph.III Clutch. Approximate cost of Borg & Beck centre plates, similar to the one delivered by Mr. Barker on 28.11.35 - (1) For odd Experimental Orders. Crimping Tool (for one segment only) £3. 4. 6d. Complete Discs each £3. 1. 6d. (2) Cost on Production Basis. Tools £255. 0. 0d. Complete Discs each 17. 6d. Hs{Lord Ernest Hives - Chair}/F.Ll.Smith. | ||