Oil drip rate specifications for D.2, D.1, and D.O. drip plugs.
| Identifier | ExFiles\Box 11\2\ 02-page183 | |
| Date | 11th April 1929 | |
| X2944 35 Hs {Lord Ernest Hives - Chair} /Gyl=L.G11.4.29. Mr. Hancock from Hs {Lord Ernest Hives - Chair} /GY. CENTRAL LUBRICATION. X3806 D.2., D.1. and D.O. drip plugs should give the same amount of oil as the corresponding S. numbers i.e., 23, 13, 5 drops per stroke of the pump. Hs {Lord Ernest Hives - Chair} /Gaye. | ||
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).