| Year | 1919 |
| Date | 26-Jun |
| Volume | 40 |
| Issue | 948 |
| Page | 519 |
| Category | Locomotive |
| Part | |
| Title | The Standardisation of Parts for Half-Inch Scale Model Locomotives |
| Author | Henry Greenly |
| Notes | Radial valve forward & reverse, reversing arm for large-wheeled engines, details of valve motion, standard die-blocks, connecting rod casting & method of building up & machining |