hmyhjx Mohs Hardness Test Kit, 2-9 Scratch Tester Hardness Test Pen, Stainless Steel Mohs Hardness Picks 4 Pack,with Storage Box,for Testing Mineral Jewellery Jade Glass

>Made of pure stainless steel, with good texture and exquisite appearance. There are 4 hardness pens in the box, each 155mm long. >Each hardness pen has writing needles with different hardnesses at both ends. The scales according to Mohs hardness are: 2&3, 4&5, 6&7, 8&9. >The storage box is equipped with a grindstone striped plate magnet, and aluminum plates, brass plates and glass plates with different hardnesses can be used to identify the hardness of minerals. >Hardness test kit is a multi-faceted shape carefully processed so that will be more convenient and durable to use. >This hardness test pen is applicable for gemstone, ceramic tile, floor, glass, mobile phone screen, mineral, concrete, etc

Features

• Product Description
• Mohs hardness pen is based on the hardness of 10 different minerals. Materials of different hardness are selected to simulate substitute minerals and made into a scratch pen that approximates minerals. It is used to test the Mohs hardness of various material surfaces. The hardness pen uses 304 Made of stainless steel, strong and durable, it uses a boxed storage box that can store various accessories in categories, keeping them neatly stored and easy to carry.
• Specification
• Name:Mohs Hardness Test Kit