I model in 1:48 – US O scale. Over time I have created models in various scales for friends and customers. This is an attempt to consolidate just a bit
ON18 .. what? On18 makes use of N gauge track to model what is 'close' to 18" gauge track in O scale. N gauge track is 9 mm/0.354~" between the rails. In O scale that is 17" ... but since there WAS mining track measuring 18" we call it On18 instead of On17.