Z scale
| Z scale | |
|---|---|
| Scale | 1.385 mm to 1 ft (305 mm) | 
| Scale ratio | 1:220 | 
| Model gauge | 6.5 mm / 0.256 in | 
| Prototype gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | 
Z scale is one of the smallest commercially available model railway scales (1:220), with a track gauge of 6.5 mm / 0.256 in. Introduced by Märklin in 1972, Z scale trains operate on 0–10 volts DC and offer the same operating characteristics as all other two-rail, direct-current, analog model railways. Locomotives can be fitted with digital decoders for independent control. Model trains, track, structures, and human/animal figures are readily available in European, North American, and Japanese styles from a variety of manufacturers.