The engine turns over freely and runs on air, if rather falteringly at low speeds. Mounted on a part-finished base with machined handrail stanchions.
| length/inches | 18 |
| width/inches | 9 |
| height/inches | 14 |
| weight/kg | 9 |
| wheel material | cast iron |
| cylinder material | cast iron |
| valve type | slide |
| governor type | Watt |