A Neilson 0-4-0ST Project, evolution of a 3d model

[Daddyman]

That's a later boiler originally only a single water gauge and try cocks, the science museum used to sell of poster of the coloured GA drawing for many years.

Yes, that's right - I have one. And it depicts a true Neilson, not a Y9 (the wheelbase is different). 

Edited December 6, 2017 by Daddyman