On30 gauge by Wikipedia Bot 0
On30 is a model railway scale and gauge that represents a narrow-gauge railway system. Specifically, "On30" refers to O scale trains running on a track gauge of 30 inches (762 mm), which is typical for narrow-gauge railroads. In model railroading, O scale generally has a scale ratio of 1:48, meaning that 1 inch in the model represents 48 inches in real life.

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