Cross-section drawing of a 34x7 Traction Tread Low Pressure Tyre.
| Identifier | ExFiles\Box 53\2\ Scan068 | |
| Date | 23th October 1923 | |
| 34 5/8 DIA. 7 1/4 20 DIA 34x7 TRACTION TREAD L.P.T. OVERALL DIMENSIONS LOW PRESSURE TYRE 34x7 DRAWN BY CHECKED BY R 23-10-23 EQUIPMENT DEPT FORT DUNLOP DATE ISSUED SK N° 5163 | ||
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).