Small steam engine of the <a href="http://www.ifs.rwth-aachen.de/">Department
of Rail Vehicles and Materials-Handling (Institut f&uuml;r Schienenfahrzeuge
und F&ouml;rdertechnik)</a> of the <a href="http://www.rwth-aachen.de/">Aachen
University of Technology (RWTH)</a> seen on 25 January 2002. The device in the
center should be the air pump. Left of it is the connection between the
Heusinger's gear and the lever in the cab.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph Schmitz</a>