O scale
In 1997 Atlas O, LLC was established as a separate business entity dedicated to producing multiple lines of O scale model railroad products including track, freight cars, locomotives and accessories, co-founded and led by James J. Weaver. After spending many years developing a number of products across many price points, including a successful line of O scale sectional track, Weaver died in 2011. Atlas O, LLC became a wholly owned subsidiary and was merged into Atlas Model Railroad Co. Inc. effective January 1, 2012.