scheme depicting angle of movement on the <a href="https://en.wikipedia.org/wiki/en:Plough" class="extiw" title="w:en:Plough">plough</a>.
<a href="//commons.wikimedia.org/wiki/User:Juan_de_Vojn%C3%ADkov" class="mw-redirect" title="User:Juan de Vojníkov">Juan de Vojníkov</a>
CC BY-SA 4.0
compiled from <a href="//commons.wikimedia.org/wiki/File:Aratro_a_doppio_versoio.JPG" title="File:Aratro a doppio versoio.JPG">Aratro a doppio versoio.JPG</a>