| Year | 1930 |
| Date | 17-Jul |
| Volume | 63 |
| Issue | 1,523 |
| Page | 47 |
| Category | Steam |
| Part | |
| Title | Model Compound Steam Engine Construction |
| Author | |
| Notes | Mr Ballantyne's model, general notes, the model as finally produced, reversing gear bracket and worm shaft, reversing lever, the drawings, reversing and condenser pump gears, pump guide and valve spindle guide brackets, final note |