| Year | 1936 |
| Date | 11-Jun |
| Volume | 74 |
| Issue | 1,831 |
| Page | 555 |
| Category | Nautical |
| Part | |
| Title | A Model Launch-Type Engine |
| Author | J.N.Maskelyne |
| Notes | A design suitable for the construction of either a working model or one for the show-case. The valve, sections showing the valve in position, the screw-in gland |