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 estimate for new tools and a modification request to increase the life of milling cutters.
| Identifier | ExFiles\Box 93\1\ scan0138 | |
| Date | 18th January 1937 | |
| PHANTOM III STANDARDISATION OF PARTS Estimated cost of new tools £14.0.0d. Could be brought on production as soon as new milling cutters are available. (without scrap). Modification requested by Works increases life of milling cutter from 150 to 200 rods. Each cutter costs £8. not £14. hence actual saving although not shown in factory cost is 1/7d. per set of conn. rods. RHC.{R. H. Coverley - Production Engineer} [Stamp] 19 1937 SH | ||