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 1/22 the size of an actual train. In dollhouse scale G-scale is close to 1:12 or one-inch scale. U.S. Only Shipping. Our Webstore is currently shutdown for maintenance. We apologize for any inconvenience. (Miscellaneous Section).