An instrument for measuring the hardness of crystals.

An instrument for measuring the hardness of a material, this being indicated by the height of rebound of a small diamond-tipped hammer dropped…

Used attributively with reference to the scleroscope (see Scleroscope, n.) invented by Albert Shore and to a scale of relative hardness associated…

Used attributively to designate Brinell's method (introduced 1900) of measuring the hardness of substances. (See quot. 1954.)

An instrument for measuring the hardness of a substance, typically a metal.

attributive. Designating a hardness test in which the depth of penetration of a solid (usually a metal) by a steel ball or a diamond cone is…

Something that produces indentations; spec. a small hard sphere, pyramid, or similar object used for producing an indentation in a solid (as in an…