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).
Drawing for a light hydraulic component, reference H.986.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page31 | |
| Date | 25th April 1933 guessed | |
| H = 986 LIGHT HYDRAULIC PPR H.986 7.000 Dia 5.750 Dia 3.840 Dia ± .001 1.25" 9.400 Dia. 6.400 Dia ± .002 25 lbs in² M.1250 6 - OFF U.14357 / B.H.T. OVHD. S/N | ||