LR 505 Adjustable Pencil Hardness Tester
LR 505 Adjustable Pencil Hardness Tester is designed according with ASTM D 3363,ISO 15184.Operator can obtain three different weights（500g,750g and 1000g）through selecting different loading weight.
LR 505 Adjustable Pencil Hardness Tester
Main Technical Parameters
■ Three points are touched on the tested surface（roller, pencil core）
■ The angle between pencil and the tested surface is 45º
■ Built-in spirit bubble, convenient to check level when tester is working
■ Pressure of pencil lead is 500g,765g,1000g
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