Shore A DUROMETER is designed for testing the hardness of soft rubber, printer roller and other elastomer material. (ASTM--D--2240). Please test 3 times and calculate the average as result. Specifications:Resolution 1.0HATotal measure force 8.1NOutside pressure 1kgPressure needle top cone angle 35°Needle length 2.5mmFlat cone point φ0.79mm diameterDial Scale 0~100HAThickness of test specimen > 6mm, = feet area(Diameter 18mm)อ่านเพิ่มเติม