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).
Clear marking of components fitted with 'Wellworthy' rings for testing.
| Identifier | ExFiles\Box 16\1\ Scan178 | |
| Date | 21th October 1925 | |
| - 2 - BY1/H.{Arthur M. Hanbury - Head Complaints} 21.10.25. to be built up to go through its test with "Wellworthy" must be clearly marked, indicating that it has "Wellworthy" rings on it. BY.{R.W. Bailey - Chief Engineer} By | ||