Water-powered drilling machine. Copper engraving by <a href="https://en.wikipedia.org/wiki/Salomon_de_Caus" class="extiw" title="w:Salomon de Caus">Salomon de Caus</a>.
<a href="//commons.wikimedia.org/wiki/User:Mattes" title="User:Mattes">User:Mattes</a>
<span class="int-own-work">Self-photographed</span>