The instrument applies mechanical measurement.
Keep three point touch the coating (two wheel, a pencil core),
and a 45degree angle between pencil and test surface.
Push the instrument sliding,pencil draws the corresponding track in the coating.
In the change of different pencil marks, the hardness value of the film can be determined.
Coating hardness is the necessary measurement for the performance of coatings.
This instrument applied the pencil scratch method.
Pressure of pencil tip: 1000/800/750/500/400g (Choosetable)
The angle between pencil and film surface is 45°
Three points are touched on the tested surface (roller, pencil tip)