q-gauge

Q gauge

noun
O gauge ( def 2 ).
Dictionary.com Unabridged

O gauge

[oh]
noun
1.
a model-railroad gauge of 1.25 inches (32 mm).
2.
Also called Q gauge. a model-railroad gauge of 1.1875 inches (30 mm).

Origin:
1900–05

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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