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).
Data table for 'Governor Range', correlating M.P.H. with values in lbs.
| Identifier | ExFiles\Box 5a\4\ 04-page089 | |
| Date | 21th July 1934 | |
| 21 CIII 21.7.34. Governor Range M.P.H lbs 10 1 1/2 20 2 30 3 40 5 50 6 60 8 70 10 Governing 15 lbs | ||