Editing S scale (section)

==Terminology==
The terms "scale" and "gauge" are often confused. Strictly speaking, ''scale'' is the ratio of the size of a model to that of its prototype and ''gauge'' is the distance between the track railheads.  In the case of S scale, the proportion is 1:64 or {{frac|3|16}} inch modeling 1 foot. Standard S gauge track has a spacing of {{cvt|0.883|-|0.905|in}}. Three-foot gauge in S scale (Sn3 gauge) is {{cvt|0.563|-|0.585|in}}.<ref>{{Cite web |date=2014-06-09 |title=S-3.2 Standard Scale Trackwork |url=https://www.nmra.org/s-32-standard-scale-trackwork |access-date=2025-01-16 |website=National Model Railroad Association |language=en}}</ref>