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Reference.org
SE scale
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<p>SE scale is a designation used by some modellers to describe miniature (model) trains which run on either <a href="/facts/Gauge_1/wkPH54pI">Gauge 1</a> (45 mm or 1.772 in) track or <a href="/facts/O_gauge/WQ3RY5M3">O gauge</a> (32 mm or 1.26 in) track. In the SE scale, 7/8 of an inch equals one foot, which is a ratio of 1:13.7. On 45 mm (1.772 in) gauge track this represents real life <a href="/facts/Narrow-gauge_railway/AM4D6E6I">narrow-gauge railways</a> that are 2 ft (610 mm) gauge, while on 32 mm (1.26 in) gauge track this represents 18 in (457 mm) railways. </p><p>Modelling on a scale where 7/8 inch = 1 foot is relatively new (within the last 20 years)[<i>year needed</i>] and, as a result, the majority of the modellers <a href="/facts/Scratch_building/2PM9tLMp">build from scratch</a>. </p>