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).
Recommendation to standardise a modification for the 2 BA box spanner.
| Identifier | WestWitteringFiles\I\June1922\ Scan85 | |
| Date | 20th June 1922 guessed | |
| (2) outside. This modification should be standardised for the 2 BA box spanner where-ever used. E.{Mr Elliott - Chief Engineer} | ||