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).
The lack of standardised nomenclature for spark plug insulators from various manufacturers.
| Identifier | ExFiles\Box 142\3\ scan0224 | |
| Date | 7th June 1937 | |
| 1204 Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}7/R.7.6.37. Nomenclature. Replying to Sg{Arthur F. Sidgreaves - MD}8/E31.5.37, unfortunately the Plug Manufacturers are not being very helpful in standardising nomenclature. They are all making the same type of insulator, and the following are the names they have given to them:- K.L.G. - Corundite A.C. - Sintercorund Lodge - Sintox. Therefore, although we propose to refer to plugs as corundite, in future, there is bound to be some confusion. Rm.{William Robotham - Chief Engineer} | ||