Pencil hardness tester Manual

Description:

Scratch pencil hardness tester is also called hand-cranked pencil hardness tester hardness is an important physical property of lenses and coating films, such as wear resistance, wear particle resistance, friction resistance, scratch resistance, impact resistance and film retention and cleaning difficulty, etc., therefore, coating film hardness is a necessary indicator to evaluate the performance of lenses and coatings. This instrument can be used to easily determine the hardness of lenses and coating films.

Specification: