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2 gauge
Scale ratio
ca. 1:22.5
Model gauge
64 mm (2+1⁄2 in) later: 2 in (50.8 mm)
Prototype gauge
1,435 mm (4 ft 8+1⁄2 in) standard gauge
IIm gauge LGB Train.
Gauge 2 (also called 2 gauge or II gauge) is a model railway gauge, originally 64 mm (2+1⁄2 in),[1] then standardised in 1909 at 2 in (50.8 mm), a 20% reduction and a change in definition: from mm to inch.[citation needed] It has since fallen into disuse. The gauge was introduced by Märklin at the Leipzig toy fair in 1891. Gauge 2 was equivalent to a 1:22.5 scale.
^"Normen Europäischer Modellbahnen Maßstäbe, Nenngrößen, Spurweiten" (PDF) (in German). NEM. 2011. Archived from the original (PDF) on 2016-03-03. Retrieved 2014-05-15.
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