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).
Letter from H.D. Symons & Company Limited regarding a novel method for testing conductance on sheet insulating materials.
| Identifier | ExFiles\Box 61\1\ scan0167 | |
| Date | 23th March 1931 | |
| H.D.S. continuation Rolls Royce Ltd. standard for all electric strength tests, but no standard electrodes have been adopted for conductance tests on sheet insulating material. Indeed, we think it is true to say that the idea of testing any sheet insulating materials for conductance in the manner which you have advised us is entirely novel. We are, dear Sirs, Yours faithfully, H.D. SYMONS & COMPANY LIMITED. Harold D.{John DeLooze - Company Secretary} Symons. | ||