Your wish list is currently empty.
MOHS SCALE
Mohs hardness is a rough measure of the resistance of a smooth surface to scratching or abrasion expressed in terms of a scale developed in 1812 by the German mineralogist Friedrich Mohs.
Mohs hardness is a rough measure of the resistance of a smooth surface to scratching or abrasion expressed in terms of a scale developed in 1812 by the German mineralogist Friedrich Mohs.