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of modeling, but developments in recent years have addressed the concerns of scale model railroaders making O scale popular among fine-scale modellers who value the detail that can be achieved.

The size of O is larger than OO/HO layouts, and thus is a factor in making the decision to build an O gauge layout.

Collecting vintage O gauge trains is also popular and there is a market for both reproduction and vintage models.

History

The name for O gauge and O scale is derived from "0 [zero] gauge" or "Gauge 0" being

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