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【Mohs hardness scale】Mohs hardness scale is divided into levels 2-9. The numerical samples of each level are as follows: 2# gypsum, 3# calcite, 4# fluorite, 5# apatite, 6# orthoclase, 7# Quartz, 8# topaz, 9# corundum. 【Premium Material】The rock hardness test kit is made of stainless steel, sturdy and durable. There are 8 hardness pens and 8 inspection samples in the box. 【High sensitivity】The metal hardness tester has high accuracy, multi-faceted shape and careful processing, making it more convenient and durable to use. 【Wide range of uses】The hardness test kit is used to test various materials such as gemstones, jade, ceramic tiles, floors, glass, mobile phone screens, minerals, concrete and more. 【Instructions for use】When using the metal test kit, keep the pen tip at 70° above the ground, press the pen tip, draw a straight line above the object being tested, and determine the hardness level based on the scratches. › See more product details
【Mohs hardness scale】Mohs hardness scale is divided into levels 2-9. The numerical samples of each level are as follows 2# gypsum, 3# calcite, 4# fluorite, 5# apatite, 6# orthoclase, 7# Quartz, 8# topaz, 9# corundum.
【Premium Material】The rock hardness test kit is made of stainless steel, sturdy and durable. There are 8 hardness pens and 8 inspection samples in the box.
【High sensitivity】The metal hardness tester has high accuracy, multi-faceted shape and careful processing, making it more convenient and durable to use.
【Wide range of uses】The hardness test kit is used to test various materials such as gemstones, jade, ceramic tiles, floors, glass, mobile phone screens, minerals, concrete and more.
【Instructions for use】When using the metal test kit, keep the pen tip at 70° above the ground, press the pen tip, draw a straight line above the object being tested, and determine the hardness level based on the scratches.
