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).
Blueprint showing a cross-section of a component with a diameter dimension.
| Identifier | ExFiles\Box 85\5\ scan0027 | |
| Date | 26th April 1933 | |
| 1.500 DIA ROLLS ROYCE. LTD. PRINT ROOM APR 26 1933 DERBY. | ||