To measure the Shore D scale hardness of specimens and articles of hard rubber and its derivatives, according to UNE EN ISO 48-9, ISO 7619, DIN 53505 and ASTM D 2240-15. Used in the following types of materials: Hard thermoplastic, hard rubber and plastic high hardness, plexiglass, polystyrene, sheet vinyl, cellulose acetate, thermostatic and laminated formica, graphite, etc.