Source: wikibot/sclerometer
= Sclerometer
{wiki=Sclerometer}
A sclerometer is an instrument used to measure the hardness of materials, particularly metals and minerals. The term is derived from the Greek word "scleros," meaning hard. The device typically operates on the principle of applying a known force to a point or a surface and measuring the depth or size of an indentation produced, or the resistance to scratching by a harder material.