XNZJHPP High Sensitivity Hardness Test Kit - 2-9 Scratch Tester Pen with Storage Box for Gem, Jade, Jewelry, and Mineral Identification - Multi-faceted Design
XNZJHPP
【2-9 Mohs Hardness Pen Set】Includes 2# Gypsum to 9# Corundum, featuring exquisite texture and appearance for effective hardness testing. 【High Sensitivity】Metal hardness tester ensures accuracy with a multi-faceted design, enhancing convenience and durability during use. 【Premium Materials】Rock hardness test kit crafted from sturdy stainless steel, includes 8 hardness pens and 8 inspection samples in a compact box. 【Instructions for Use】Position the pen tip at 70° above the surfaces, press down, and draw a line to determine hardness based on the resulting scratches. 【Wide Range of Uses】Ideals for hardness measurement of gems, jade, ceramic tiles, glass, mobile phone screens, minerals, and concrete.
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