Applications: The Pencil Hardness Tester is Applicable to determine coating and film hardness. It is suitable for labs and building sites. It also can examine the hardness of coating film on any direction. Scientific and rigorous testing of the important properties of the coating film. Test the hardness of coating film Manufacturing paint Pencil Hardness Tester Coating Hardness Tester (500, 750, 1000G 3 in 1) with 13 pencils Product desciption The instrument is mechanical. Three point (Two wheels and a lead core) contact the tested surface always to ensure the pencil and the tested surface forms the angle of 45 degrees, so as to push the movement of the instrument, to complete the testing process. Featured overall upgrade of production technology more bright carts, beautiful and generous overall body. Two wheels are stainless steel and bearing design, beautiful appearance, flexible use, long life. Free testing of 500g, 750g, 1000g Measurement Angle: 45°(Between Pencil and Measured Surface) Three Touch Points: Two Wheels, A Pencil Core Pencil: 6B-B,HB,H-6H Total 13 pencils Material: Stainless steel wheels and bearings.