TT Scale, whose name stands for table top, is 1:120 scale. Its original purpose, like the name suggests, was to make a train small enough to be able to assemble and operate it on a tabletop. The gauge of the track, distance between the rails, is 0.472 inches. We have categorized items to make browsing for specific products easier for customers. Should you find something is not in the correct category or encounter an error with the website, please send us a message on the "Contact Us" link so that we may correct the item or problem.