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).
The performance and condition of D.W.S. lightened type jacks.
| Identifier | ExFiles\Box 5a\4\ 04-page183 | |
| Date | 15th December 1934 guessed | |
| - 9 - D.W.S. LIGHTENED TYPE JACKS. The jacks have been quite equal to the heavier type in manipulation and lifting the car up. The bottom front end of the rear jacks have been battered by stones, and the bottom plate is disintegrating, the metal being torn. Water and sludge now enters the jacks. | ||