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).
Blueprint diagram of a distributor boss cross-section with a bakelite terminal nut.
| Identifier | ExFiles\Box 61b\2\ scan0147 | |
| Date | 12th December 1931 | |
| TERMINAL NUT ALL BAKELITE DISTRIBUTOR BOSS METAL HT INSERT ROLLS-ROYCE LTD DERBY 12/12/31 | ||