Loupe Bear Brooksbank Loupe Bear Brooksbank

Loupe

A loupe is a small magnifying glass used by jewellers.

Read More
Moh’s Scale Bear Brooksbank Moh’s Scale Bear Brooksbank

MOH's Scale of Hardness

Moh’s hardness, rough measure of the resistance of a smooth surface to scratching or abrasion, expressed in terms of a scale devised (1812) by the German mineralogist Friedrich Moh’s.

Read More