400 Scale has existed since 1996 and since then tens of thousands of models have been produced by hundreds of different brands. Understanding who these brands and manufacturers are, and how they are interconnected is extremely complex so in this area of the site I give an overview of the history of 400 scale and the brands and manufacturers that have produced models so far. Select the areas below to understand the history of the scale. Within each part of the histories there are links to individual pages for specific brands (that can also be accessed via the main drop-down menus):