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 sheet with two tables of numerical values, titled L.M.4. and L.M.3.
| Identifier | ExFiles\Box 121\4\ scan0116 | |
| Date | 30th May 1938 guessed | |
| L.M.4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 124 1195 1155 112 1095 107 1045 102 0995 0970 0945 092 0905 087 0845 .082 L.M.3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 124 1195 1155 1115 109 1065 104 1015 099 0965 094 0915 089 0865 084 0815 | ||