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 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 TQC Hardness Pen indicates a fail of the surface hardness or wear/scratch resistance. Can be used on flat and curved surfaces.

2 versions available, the Standard & Pro
The Standard version is supplied with 3 springs and one tip:
0-3N, graduation 10 g
0-10N, graduation 50 g
0-30N, graduation 150 g
Tip 1mm
The Pro version includes the above as well as:
Tip 0,5mm
Tip 0,75mm

Pen holder with guidance wheels, which provides very stable load on tip and makes it easier to apply force.
The laser-engraved scale is clearly visible on the grey background.
 
Standards
According DIN 55656
Results can be obtained equal to: ISO 1518; AS 3894.4; EN 438-2, SIS 184188, and Corporated Standards Bosch, Volvo, Opel, van Laar.