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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 ...
The scales used include the general European modelling range of Z, N, TT, H0, 0 and also the large model engineering gauges of I to X, including 3 + 1 ⁄ 2, 5, 7 + 1 ⁄ 4 and 10 + 1 ⁄ 4-inch gauge. As 00 is a particularly British scale, it is not included within this pan-European standard.
While HO scale is a 1:87 scale (3.5 mm to 1 foot), resulting in a 16.5 mm (0.65 in) gauge from real life prototype 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge standard gauge. Conversely, modeling standard gauge in Lego trains would yield a scaling of (37.5:1435 =) 1:38.3.
Since the 1950s, 2 mm scale has been used to depict narrow-gauge prototypes on various track gauges down to 4 mm (0.157 in) [citation needed], but almost everything has to be hand-made, unless some Z scale parts are used. N scale: 1:160: 9 mm Name derived from "Nine millimeter"; this is the second most popular scale worldwide.
Federal Customs Administration (AZL) of Switzerland, see Swiss Border Guard; American Z Line (model trains), a company making Z-scale model rail, see Z scale 'Azl (Arabic: عزل) the withdrawal method under Islamic jurisprudence; Anti Zealot League (moderate right wing) activists against extreme zealous protestors
ZZ scale (1:300) is a model railroad scale with a standard gauge of 4.8 mm (0.189 in). Models for the scale are produced exclusively by Bandai, and depict Japanese prototypes such as Shinkansen trains. To date, no other traditional scale railway support exists for the scale. However the field of miniature war games has a large selection of ...
In late 60s Märklin was experimenting with N scale products, which were never offered commercially. Instead, they started to develop a completely new model railway scale 1:220. Prior to 1972 there may have been some prototypes of z-scale products, but seeing them publicly in stores 3-4 years earlier sounds a bit unbelievable.
The USRA 2-8-8-2 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-8-2 wheel arrangement in the Whyte notation, or (1'D)'D1' in UIC classification.