Assembly drawing of a reflux drum -- for mechanical study.
<a href="//commons.wikimedia.org/wiki/User:Cdang" title="User:Cdang">Cdang</a>
2010-01-18
<span class="int-own-work" lang="en">Own work</span>, from the french exam BTS ROC session 2006, épreuve U41, Éducation nationale (France)