| Year | 1956 |
| Date | 19-Apr |
| Volume | 114 |
| Issue | 2,865 |
| Page | 652 |
| Category | Nautical |
| Part | |
| Title | Power by Paddles. An Engine for Devonia |
| Author | Edgar T.Westbury |
| Notes | Construction of screw-operated Reversing Gear. Traversing screw and nut, setting up change wheels, internal tap, method of forming spokes, assembling the gear |