SE scale is a designation used by some modellers to describe miniature (model) trains which run on either Gauge 1 (45 mm or 1.772 in) track or O gauge (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 narrow gauge railways that are 2 ft (610 mm) gauge, while on 32 mm (1.26 in) gauge track this represents 18 in (457 mm) railways.

SE scale
SE scale logo
Scale78 in to 1 ft
Scale ratio1:13.7
Model gauge45 mm (1.772 in)
and 32 mm (1.26 in)
Prototype gaugeNarrow gauge railway, 2 ft (610 mm)
Minimum gauge railway, 18 in (457 mm)

Modelling on a scale where 7/8 inch = 1 foot - 0 inches is relatively new (within the last 20 years)[year needed] and, as a result, the majority of the modellers build from scratch.

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