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).
Diagram illustrating a modification to increase a release hole to .137, showing petrol and air lines.
| Identifier | ExFiles\Box 68\2\ scan0076 | |
| Date | 19th November 1928 | |
| INCREASED RELEASE HOLE TO .137 AIR RELEASE 3/16" PETROL SUPPLY 5/16" TO CARB! ROLLS-ROYCE, LIMITED PRINT ROOM, 19 NOV 1928 DERBY. | ||