 3 ft gauge rail modelling

3 ft gauge rail modeling refers to the practice of constructing and operating model railroads that are built to a scale representing railways that utilize a 3-foot gauge track. In model railroading, "gauge" refers to the distance between the rails, and a 3-foot gauge, or "narrow gauge," is narrower than the standard 4 ft 8.5 in (1435 mm) gauge commonly used by most railways in the world.