QHQ-A portable pencil method Hardness Tester is a common pencil Hardness Tester, mainly through the test pencil of different hardness values, manually push the pencil Hardness Tester on the surface of the paint film to scratch, and identify the hardness of the paint film.QHQ-A Portable Pencil Method Hardness Tester is a Hardness Tester with mechanical structure design, which is very simple to operate. Fine scienceThe outer box of QHQ-A pencil Hardness Tester is a well-used wooden box, and the pencil Hardness Tester model name is printed on the surface of the box.
QHQ-AThe portable pencil method Hardness Tester is mechanical, and the three-point contact with the tested surface (two points is the wheel, one point is the lead core) always ensures that the pencil forms a 45° angle with the tested surface, which is used to push the movement of the Hardness Tester, and the test process can be completed.
QHQ-APortable pencil Hardness TesterDetermination of paint film hardness test by plow paint film pencil hardness grade Technical characteristics: Hardness is expressed as the pencil hardness grade of the plow paint film under specified test conditions.

【Extended Reading】QHQ-A Pencil Hardness Tester Instruction Manual