O Gauge is a popular model railway scale that uses a track gauge of 1.25 inches (32 mm). It is commonly associated with a scale ratio of 1:48 in the United States, meaning that one foot in real life equals ¼ inch on the model. O Gauge trains are known for their durability and are often used in both toy trains and more detailed model railroads. This scale allows for a wide variety of train types, including steam and diesel locomotives, as well as freight and passenger cars. Many enthusiasts enjoy building elaborate layouts featuring scenery, buildings, and landscapes, making model railroading a popular hobby among both children and adults.