Standard DIN SPEC 91064

The following devices are in accordance with DIN SPEC 91064:

ZSH 2090 Pencil Hardness Tester

Hardness tester according to Wolff-Wilborn for determination of resistance of coatings to mechanical stress by pencils of different hardness.

Pocket testers for hardness tests on flat and curved surfaces.

Pocket tester for determination of scratch resistance on painted or plastic surfaces.