An <a href="https://en.wikipedia.org/wiki/Anoscopy" class="extiw" title="en:Anoscopy">anoscope</a>, a <a href="https://en.wikipedia.org/wiki/Proctoscopy" class="extiw" title="en:Proctoscopy">proctoscope</a> and a <a href="https://en.wikipedia.org/wiki/Rectoscopy" class="extiw" title="en:Rectoscopy">rectoscope</a>, with approximate lengths.
<p>Source: <a rel="nofollow" class="external text" href="http://www.gimaitaly.com/en/assets/pdfprodotti/94en.pdf">Gima International Catalogue</a></p>
<a href="//commons.wikimedia.org/wiki/User:Mikael_H%C3%A4ggstr%C3%B6m" title="User:Mikael Häggström">Mikael Häggström</a>
2010-09-01
<span class="int-own-work" lang="en">Own work</span>