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| gauge | 3 1/2 inch |
| length/inches | 34 + 20 |
| width/inches | 7 |
| height/inches | 10 |
| weight/kg | 25 + 10 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | Gresley-Holcroft conjugated |
| reverser type | screw |
| boiler number | TVM 11-80 020 |
| year built | 1980 |
| boiler maker | Tame Valley Models |
| CE mark | n/a pre-2002 |
| boiler type | locomotive with combustion chamber |
| boiler material | copper |
| boiler construction | silver soldered |
| fusible plug | no |
| mechanical pump | twin axle pumps |
| hand pump | yes |