Free-moS

Free-Mo S Standard

Sn3.5/S16.5 Free-Mo

Sn2/S9.5 Free-Mo

Standard S scale runs on track that has a gauge of 22.42mm (0.883 in), whereas Sn3.5 (1067mm/3'5"/Cape gauge) can be run on HO gauge tracks which are in scale width but sleepers are in the incorrect scale.