Z and N scale trains two of the smallest commercial scale model trains you can get but which is smallest.
While HO and OO gauge model trains maybe the most popular, Z and N scale layouts are increasingly popular. (If you’re confused by scale and gauge, see my handy guide on the differences).
With a scale of 1:220 and with a track gauge of 6.5 mm, Z scale is smaller than N scale which has a scale of 1∶148 scale (British) and a track gauge of 9 mm.
Z scale is without doubt very small but still enjoyable although if you are thinking about diving into the petite world of Märklin Z trains, read Six things you’ll want to know before starting.