These pencil hardness testers have been designed to test the scratch hardness of coatings.
Pencils of 6B to 8H hardness-grade are used.
The pencil is moved scratching over the surface under a 45° angle with a constant pressure. An optical assessment is carried out to see which pencil hardness damages the surface.
Certifikace: ISO 15184, ASTM D3363, JIS K-5400, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227, EN 13523-4.
Informace o dodávce: Supplied with 20× pencils and a pencil sharpener.