Micro Star indenters are measured with instruments calibrated with standards. The angles are measured with a specially designed goniometer. Linear dimensions are measured with calibrated optical microscopes or SEMs. Each Micro Star indenter is measured individually for all pertinent dimensions. The figure below shows the angles and nomenclature used on a 3-sided indenter. The specification sheet below is issued with each indenter. Sample data from a cube corner indenter is shown. The tolerances of all specified angular or linear dimensions meet or exceed ISO 14577-2 which defines internationally accepted micro and nano indenter tolerances. Smaller tolerances are available for some indenters at extra cost.
