"C & N" Scale ASTM E18-08a Class B Working Grade Diamond Indenter (Standard Rockwell and Superficial in one indenter)with Certificate. 1/4" standard straight shank with flat. Part #GDICN.
Manufactured for use in most hardness testers, ie Wilson, Clark, Buehler, United, Mitutoyo, etc...
For Wilson Mobile Portable Hardness Testers. "C" Scale ASTM E18-08a Class B Working Grade Diamond Indenter with Certificate. 1/4" standard straight shank with spring loaded retention ball on shank.Part #GDIC-M.