Steam turbine from the power plant Altbach generating unit 1 (manufactured by AEG, entry into service 1944-12-13, taken out of service in April 1975 after 42173 hours of operation, 15000 kW power), Institute of Thermal Turbomachinery and Machinery Laboratory of the University of Stuttgart, campus Stuttgart-Vaihingen, Germany
<a href="//commons.wikimedia.org/wiki/User:Julian_Herzog" title="User:Julian Herzog">Julian Herzog</a> (<a rel="nofollow" class="external text" href="http://julianherzog.com">Website</a>)<br>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>