O gauge

American  

[oh] / oʊ /

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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Etymology

Origin of O gauge

First recorded in 1900–05

Example Sentences

The Fine Scale O Gauge models, made by James Stanley Beeson, went for £25,000 - nearly four times the total estimate.

From BBC

“The only other place where you can get O gauge stuff is in Winston-Salem. Before we opened this shop, we would travel all the time trying to get the parts and the cars we wanted.”

From Washington Times

Mike’s Trains sell O gauge, OH gauge and N gauge trains and accessories.

From Washington Times

A snow scene with O gauge railroad and trains for kids to run.

From Washington Post