SM32 gauge railways are built to a scale of 16 mm to the foot and run on 32 mm gauge track ( O gauge ). This makes them for suitable for modelling narrow gauge protoypes. This size of model is suitable for running indoor or outdoors and is one of the garden gauges. Most SM 32 models are steam powered but some are also battery powered. Power from the rails is not popular as track maintenance on outdoor track is a problem.

Models currently under construction are Hunslet Linda and small quarry Hunslet. Once set up, it is often better to make more than one set of parts and I am making 6 of each. This will make some available some time in the future.