Promotional leaflet for 'Magister Pressuum' pressure-filled joint rings.
| Identifier | ExFiles\Box 86\1\ scan0076 | |
| Date | 25th July 1934 guessed | |
| BWG {J. C. Bowring} Magister Pressuum WILLS PRESSURE FILLED JOINT RING, LTD., SALMON PARADE — BRIDGWATER, SOM. | ||
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).