Blueprint showing an inverted plan view and a cross-section of a circular component.
| Identifier | ExFiles\Box 170\1\ img058 | |
| Date | 18th January 1939 guessed | |
| INVERTED PLAN VIEW SECTION AA {D. Abbot Anderson} F E | ||
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).