This is a mixed gauge 3mm scale layout. The link below will take you to the blog dedicated to it’s construction;
Ouse Valley Modeller is a blog about my 4mm OO gauge modelling, my observations mostly about Sussex railways in the 1950's and my layout Herstmonceux
Finescale (ish) Modelling in 4mm Scale by two friends
Railways & other things I enjoy
Australian Model Railways
My modelling musings on Portchullin, Glenmutchkins and anything else that takes my fancy.
The epic struggle to build a model railway exhibition layout at 4mm to the foot