GA-6015台式铅笔硬度计

描述

铅笔硬度计

测试 标准
国标/T 6739 paint and varnish, paint film hardness pencil method.

使用

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.

范围

磷acking list
Desktop pencil hardness tester
A balance weight :1000 grams
6 乙 – HB – h pencil, 13