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The sclerometer, also known as the Turner-sclerometer (from Ancient Greek: ? meaning "hard"), is an instrument used by metallurgists, material scientists and mineralogists to measure the scratch hardness of materials. It was invented in 1896 by Thomas Turner (1861-1951), the first Professor of metallurgy in Britain, at the University of Birmingham.

The Turner-Sclerometer test consists of microscopically measuring the width of a scratch made by a diamond under a fixed load, and drawn across the face of the specimen under fixed conditions.[1]

See also

  • Hardness – Resistance to localized plastic deformation from mechanical indentation or abrasion
  • Scleroscope – Instrument used to measure rebound hardness
  • Tribometer – Instrument that measures tribological quantities


  1. ^ Howe, Henry Marion (1916). The metallography of steel and cast iron. McGraw-Hill Book Company, Inc. p. 363.

External links

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