Train Scale

There are several train scales that are used by the manufacturers…

When making a small representation of a larger object, we use scales. Scales are used in maps, dioramas, graphics, and of course, model railroading.

The purpose of a scale is to make the representation’s dimensions equivalent to those of the object, so that the representations looks proportionate in every part. Scales are measured in ratios.

A ratio is composed of two numbers, separated by a colon. For example “1:20.” For representations that are smaller than the objects than they represent, the first number will always be 1, and it represents one measuring unit in the model, such as 1 inch, 1 foot or 1 centimeter. The second number is the factor by which the first number has to be multiplied in order to obtain the equivalent of the dimension on the real object.

If it sounds confusing to you, don’t worry. It’s much easier than what it sounds like. For example, let’s say that your model train has a train scale of 1:30. If a window on the model scale is 1 inch long, then that window will measure 30 inches long on a real train. If a wheel’s diameter measures 2.5 inches long, then the real wheel’s diameter will measure 75 inches long.

Of course, scales can be used when making representations that are larger than the objects that they represent. For example, in pictures of insects or microorganisms. In those cases, the first number will represent how many times the picture or image has to be reduced in order to get the real dimensions. For example “1,000:1”

When it comes to model railroading, there are several train scales that are used by the manufacturers.