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The Brinell scale is a measure of hardness in materials. It is measured by making a dent in the material and seeing how deep the dent goes with a known amount of force. It is similar to the Mohs' hardness scale, which scratches the material. It is used to test the hardness of metals. Normally, a steel ball is pressed into an object and the dent made is measured.
- Tabor, David (2000), The Hardness of Metals, Oxford University Press,