Professional Mohs Hardness Test Kit | 2-9 Level Scratch Test Pen Set with Storage Box for Glass, Tile, Concrete, Coatings & Minerals,A

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.When two minerals with different hardnesses scratch each other, they will leave scratches on the surface of the minerals with lower hardness.★ Specification:● Product name: Mohs Hardness Tester● Material: Stainless steel● Measuring range: 2-9 levels● Hardness standard: 2&3, 4&5, 6&7, 8&9● Product material: 304 stainless steel (main body)● Size:230*185*47mm● Weight: 500G★ Products include:4×Hardness pen1×Storage box

• ▲ 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.
• ▲ Hardness test kit is a multi-faceted shape carefully processed so that will be more convenient and durable to use.
• ▲ 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.
• ▲ This hardness test pen is applicable for ceramic tile, floor, glass, mobile phone screen, mineral, concrete, etc.