The TQC Hardness Test Pen is a pocket instrument for testing the hardness and wear/scratch resistance of materials such as coatings, lacquers, plastics or related products. A tungsten carbide tip is drawn over the surface with a defined constant pressure. The pressure on the tip can be changed using the slide or by changing the spring. A visual mark on the surface after use of the Hardness Test Pen indicates  a fail of the surface hardness or wear/scratch resistance. Features ·  Ergonomic design with anti-slip texture on the holding point ·  Made of maintenance-free anodized aluminum, tips in tungsten carbide ·  Can be used on flat and curved surfaces ·  Available in 2 models Basic and pro ·  Very stable load on tip ·  Easy to apply force Applications ·  Paints, Coatings and Varnishes ·  Auto Industry ·  Plastics Industry ·  Furniture Industry ·  Corrosion Industry ·  Musical Instruments Can be used in accordance with ISO 1518; AS 3894.4; EN 438-2, SIS 184188, DIN 55656 and Corporate Standards Bosch, Volvo, Opel, van Laar.