Welcome to the HO Page."HO" indicates we are modeling in HO-scale which in North America is a ratio of 1 to 87 or 1:87 or 1 foot in the model equals 87 feet in the real world. HO-scale trains run on 16.5 millimeters track. Standard gauge track in the real world is 4ft 8.5 inches between the rails. So in HO-Scale standard gauge track is represented by 16.5 millimeters track or 16.5 millimeters between the rails.

(HO Scale is Half of O Scale)