Measuring Tool in Acrobat Pro DC

[OneShot5561]

Does anybody know how to reset the Measuring Tool back to default settings?

Somehow I have the most rediculous arrow head when Im taking a measurement and want t set it back to the original arrow head.

[ls_rbls]

Hi,

It would help if you share a screenshot of what you're looking at in your document.

Are you talking about the defaultt line ending ? 

If it is, change it to "None" if you don't want arrowhead in your measuring lines.

Also disable "Use scale and unit form document (when present)" just to rule out if such settings  has anything to do with what the original document used when it was created (like a  plug-in, for example).