Quote Originally Posted by CraftyGeek View Post
I've just done a bit of searching into edge finders - that looks like the way forward, I'd not heard of these before.

I can't seem to find a 6mm or 1/4" one though - they seem to be 10mm or larger...more googling required I think.
Chronos have a 4mm ones, a standard one EF4, and a Z-type EFZ4