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Z scale, or Z gauge, is one of the smallest commercially available model railway scales first introduced by Marklin in 1972. In the U.S. these model trains are often called micro trains. The miniature railroad in this video at 1:220 scale was built by a German model railway club. The model train layout is representing the city of Lubeck in Northern Germany at the turn of the century. Although the tracks have a gauge of just 6.50 mm, the layout shows great detail. The entire layout is controlled digitally by Selectrix Digital. Please, enjoy this great example of model railroad art.