Train sets come in a variety of different sizes, called scales. Each has an alphabetical name,
but they can also be expressed as a ratio; for example,

G-scale trains are 1/22nd the size of an actual train.
While there are many scales available, G, O, S, HO, N, and Z are the most popular.

Click on each letter for more information about a particular scale.

| G 1/22 | O 1/48 | On30 1/48 | S 1/64 | HO 1/87 | N 1/160 | Z 1/220 |