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).
Comparing the internal works cost against an outside supplier's price for a Filter Body Diecasting.
| Identifier | ExFiles\Box 142\4\ scan0068 | |
| Date | 23th December 1936 | |
| Rm{William Robotham - Chief Engineer}/Smth. - from Roy.{Sir Henry Royce} 1202 ROY{Sir Henry Royce}/MS11/P.23.12.36. File in Alum castings In reply to Rm{William Robotham - Chief Engineer}/Smth.18/AP.22.12.36., the dies are already in hand for Filter Body Diecasting E.86803.DC. The Works cost (in RR. Metal) is 9/6d each, and outside suppliers' price (made in Z3 Alloy, which has been approved by D.O.) is:- 2/8d each for 200 2/7d each for 400 Roy.{Sir Henry Royce} | ||