HOn3½ gauge


HOn3 gauge represents the modelling of gauge railways in HO scale, resulting in a model track gauge of . Trains are operated using direct current or Digital Command Control over realistic-looking two-rail track.
Railways that use the gauge can be found in New Zealand, South Africa, Indonesia, Australia, Taiwan, Japan and others. Manufacturers of Australian outline models in this size include Haskell, Wuiske Promotions, Black Diamond and PGC, as well as Hollywood Foundries for mechanisms. CMD models and SARModel produce South African HOn3.5 models. Most Japanese and Taiwan HO scale models are made to run on 16.5mm gauge track and are made to 1/80 scale but some small volume HOn3.5 kits and brass models are made for Japan with Imon being a major supplier.

Related scales

In the same scale standard-gauge trains are modelled on gauge track, known as HO scale. Sn3½ is also used to represent, as the gauge is the same as HO scale. HOm uses the same 12mm gauge track to represent metre-gauge railways. HOn3 uses gauge to represent gauge railways H0e/HOn30 uses gauge to represent railway with gauges of about. H0f gauge uses to represent 2 ft and 600 mm gauge railways.