Spirit-fired with superheated boiler, it's built as a simplified two cylinder version of the original, with Walschaerts gear actuating slide valves.
The chassis turns over freely; paintwork is worn, although with a certain period charm.
| gauge | Gauge 1 & smaller |
| length/inches | 13 + 7 |
| width/inches | 3 |
| height/inches | 4 |
| weight/kg | 3 1/2 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | Walschaerts |
| reverser type | pole |
| lubricator type | displacement |
| boiler type | locomotive |
| boiler material | copper |
| superheater(s) | 1 |
| superheater type | flue tube |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |