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Glossary of watchmaking

Mohs scale

Échelle de Moh | モース硬度/モースコウド | 摩氏硬度等级

Mohs scale

A relative scale of hardness established by the Austrian mineralogist Friedrich Moh that measures a substance's resistance to scratching. The scale ranges from 1 to 10; diamond being the hardness (10) and talc the less resistant to abrasion.