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).
Continued document discussing a standard modification for a 2.BA box spanner.
| Identifier | ExFiles\Box 5\4\ 04-page051 | |
| Date | 29th June 1922 guessed | |
| contd:- -2- spanner requires a slight modification to ensure that it will always be the right diameter over the outside. This modification should be standardised for the 2.BA box spanner where-ever used. [Stamped text, mirrored] MADE IN ENGLAND. [Stamped number] 1804 | ||