"N" Scale (Superficial) ASTM E18 Class B Working Grade Diamond Indenter with 1/4" standard straight shank with flat. Part #GDIN.
Manufactured for use in most testers, ie Wilson, Clark, Buehler, United, Mitutoyo, etc...
Rockwell Hardness Testing calibration procedures mandate the use of Diamond Indenters that are verified for geometrical and performance standards, per the ASTM E18 current revision.
Gilmore manufactures indenters that exceed the specifications and tolerances required. Each indenter is assigned a certificate of compliance assuring trace ability for each indenter.