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).
To Mr Barrington regarding the testing of T.C. Vickers Valve springs.
| Identifier | ExFiles\Box 80\3\ scan0240 | |
| Date | 26th July 1912 | |
| Mr Barrington. x375 July 26th. 1912. Re T.C. Vickers Valve springs. These have been tested on the jig equivalent for 10000 miles on the road and are quite satisfactory. We are testing a further set of the above. E.P. File | ||