Sketch showing dimensions and notes for damper leak grooves on a G.B. pendulum lever.
| Identifier | ExFiles\Box 97\2\ scan0137 | |
| Date | 1st February 1937 | |
| 7/ Radius on G.B. pendulum lever. 8/ Yoke & Silent block to be nipped up in normal loaded position. Damper Leak grooves 0.032 0.028 0.017 0.010 90° | ||
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).