<a href="//commons.wikimedia.org/wiki/Furnace" title="Furnace">Furnace</a> used in <a href="//commons.wikimedia.org/wiki/Fire_test" title="Fire test">fire test</a>. Bottom pipes let in the <a href="//commons.wikimedia.org/wiki/Gas" class="mw-redirect" title="Gas">gas</a>, middle pipes are shields for thermocouples that meassure the <a href="//commons.wikimedia.org/wiki/Temperature" class="mw-redirect" title="Temperature">temperature</a>.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2006-11-22
<span class="int-own-work" lang="en">Own work</span>