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 of a ball joint assembly with associated bolts and measurements.
| Identifier | ExFiles\Box 131\4\ scan0183 | |
| Date | 4th May 1937 guessed | |
| BOLTS 3 B.A. SOUDÉS, BOLT & NUT, 3 B.A. SOUDÉS, .250, .060 ENVIRON, .055, 3 B.A., BOULON 3 B.A., BOULON 3 B.A. SOUDÉ, SECTION A.B. | ||