its tiny size enables anybody to have a larger layout in a smaller area. Still, the closer to life-size, the more detail can be added without using tweezers.Some modelers use a scale ruler to ensure that something such as a brick wall is the correct height. For example, OO gauge uses the ratio 4 millimeters to one foot. So a 6 foot wall in reality would be 24 millimeters tall on the railway layout.

How do the trains and tracks work?