S scale
| S scale | |
|---|---|
German S scale model railroad | |
| Scale | 3⁄16 inch to 1 foot |
| Scale ratio | 1:64 |
| Model gauge | 0.883–0.905 in (22.4–23.0 mm) |
| Prototype gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
S scale (or S gauge) is a model railroad scale modeled at 1:64 scale, S scale track gauge (space between the rails) is 0.883–0.905 in (22.4–23.0 mm). S gauge trains are manufactured in both DC and AC powered varieties. S gauge is not to be confused with toy train standard gauge, a large-scale standard for toy trains in the early part of the 20th century.