So I have the display measurements addon enabled (I think- I was tremendously ill around the time it happened so I don't quite remember but afaik blender doesn't have native support for edge length displays so I presume that's what happened)(Edit: Apparently it does, thank you Gandalf3) and while trying to texture a mesh I came across this problem:
This happens regardless of what I set the measurement standard to be: the x and y edges of this mesh are always 1/20th of the equivalent z length. Why is this happening? The UV unwrapper interprets the problem in real space but I have imported the exported mesh into Unity with no sudden drastic alterations in size.
It's difficult for me to draw up a texture for the UV when this is happening so I'd rather like to know what's going on.