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O gauge

[ oh ]

noun

  1. a model-railroad gauge of 1.25 inches (32 millimeters).
  2. Also called Q gauge. a model-railroad gauge of 1.1875 inches (30 millimeters).

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Word History and Origins

Origin of O gauge1

First recorded in 1900–05

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petrichor

[pet-ri-kawr]

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Ogasawara JimaOgbomosho

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