Small steam engine of the Department of Rail Vehicles and Materials-Handling (Institut für Schienenfahrzeuge und Fördertechnik) of the Aachen University of Technology (RWTH) seen on 25 January 2002. The wheelsets with the connecting rods and the Heusinger's gear. The cross head also drives the lubrication pump in front of the leaf spring.

Digital photo by Christoph Schmitz