Unsteamed from new, the boiler has two small drilled holes in the backhead of unknown purpose (other than causing a leak!), which could be tapped and plugged.
| gauge | 3 1/2 inch |
| length/inches | 12 + 8 |
| width/inches | 6 |
| height/inches | 11 |
| weight/kg | 8 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | slip eccentric |
| lubricator type | mechanical |
| boiler type | locomotive |
| safety valve(s) | 1 |