| Year | 2017 |
| Date | 08-Dec |
| Volume | 219 |
| Issue | 4,575 |
| Page | 842 |
| Category | Steam |
| Part | |
| Title | Bottom Entry Displacement Lubricator in 3 inch Scale |
| Author | Nigel Walton |
| Notes | Describes a displacement lubricator designed for his three inch scale Allchin traction engine. How a displacement lubricator works, does it work? Building the displacement lubricator, conclusion, references |