Atoplee Precision and Hardend 10mm Mechanical Titanium Edge Finder for Milling and Lathe Machine Tool Part Shank:10mm, Total length : 90mm, Probe:4mm Precision : 0.002mm Precision and hardend, Titanium coating wear-resisting non-magnetic Without magnetic head,mechanical edge finder, not necessary to rotate while measuring, quickly locate work edges.machine, jig bore It is widely used for determining the precise machining center position of a testing too