TQC SHEEN Hardness test pen type PRO, complete kit su 3 springs and 3 tips dia 1/ 0_75/ 0,50 mm

The TQC Hardness 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 su 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 TQC Hardness Pen indicates a fail of the surface hardness or wear/scratch resistance. Can be used on flat and curved surfaces. The Pro version includes the above as well as:Tip 0,5mm Tip 0,75mm Pen holder su guidance wheels, which provides very stable load on tip and makes it easier to apply force.