A Plasser&Theurer Unimat 09-32/45 ballast tamper seen at Eschweiler Hbf (on Cologne-Aachen) on 17 July 2006. This is the central part which runs on three two-axled bogies (two at the near and one at the far end). One of the bogies seems to carry the inner frame which is shiftable lengthwise.

Digital photo by Christoph Schmitz (christoph.schmitz2@post.rwth-aachen.de)