O gauge is a popular model railway scale that uses a track gauge of 1.25 inches (32 mm). It is commonly used for both toy trains and detailed model railroads, making it suitable for hobbyists of all ages. The scale typically represents a ratio of 1:48, meaning that one foot in real life equals 48 feet in the model. Trains and accessories in O gauge can vary widely in detail and complexity, from simple, ready-to-run sets to highly detailed models for serious collectors. This versatility allows enthusiasts to create elaborate layouts and scenes, enhancing the enjoyment of the hobby.