Load testing rig with a Salter's spring balance and a series of linked components under tension.
| Identifier | ExFiles\Box 13\1\ 01-page78 | |
| Date | 17th January 1935 guessed | |
| SALTER'S IMPROVED SPRING BALANCE | ||
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).