Testador de dureza para lápis GA-6015

Descrição

Testador de dureza a lápis

Teste padrão
GB/T 6739 paint and varnish, paint film hardness pencil method.

Usar

Pencil hardness test, also known as “Wolff – Wilborn” experiment, to evaluate the coating with a different hardness value of graphite pencil hardness.
Precision design ensures that the cylinder of the pencil lead can keep unchanged in a 45 ° Angle, and maintaining a constant pressure.
Can leave a mark on the coating hardness value is the smallest pencil can determine the coating hardness level.

Parâmetro

Packing list
Desktop pencil hardness tester
A balance weight :1000 grams
6 b – HB – h pencil, 13