Vickers hardness test

noun
Vick·​ers hardness test | \ˈvikə(r)z-\

Definition of Vickers hardness test 

: an indentation hardness test for metals in which a 136-degree diamond pyramid is pressed into the surface of the metal being tested by a load of 5 to 120 kilograms

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History and Etymology for Vickers hardness test

probably from Vickers Armstrong Ltd., British steel-manufacturing concern

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