2 gauge

2 gauge
Scale ratioca. 1:22.5
Model gauge64 mm (2+1⁄2 in)
later: 2 in (50.8 mm)
Prototype gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge

Gauge 2 (also called 2 gauge or II gauge) is a model railway gauge, originally 64 mm (2+1⁄2 in), then standardised in 1909 at 2 in (50.8 mm), a 20% reduction and a change in definition: from mm to inch. 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.

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