A burette.
<a href="https://en.wikipedia.org/wiki/User:Mysid" class="extiw" title="w:User:Mysid">Mysid</a> (original by <a href="//commons.wikimedia.org/w/index.php?title=User:Quantockgoblin&amp;action=edit&amp;redlink=1" class="new" title="User:Quantockgoblin (page does not exist)">Quantockgoblin</a>)
Made in Inkscape based on <a href="//commons.wikimedia.org/wiki/File:Burette.png" title="File:Burette.png">Image:Burette.png</a>.