Z scale

Z scale
Scale1.385 mm to 1 ft (305 mm)
Scale ratio1:220
Model gauge6.5 mm / 0.256 in
Prototype gauge1,435 mm (4 ft 8+12 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.