"Rockwell scale" meaning in English

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        "A hardness scale based on the indentation hardness of a material."
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          "hardness",
          "hardness"
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          "scale",
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          "indentation",
          "indentation"
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      "raw_glosses": [
        "(materials science) A hardness scale based on the indentation hardness of a material."
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  "word": "Rockwell scale"
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        "A hardness scale based on the indentation hardness of a material."
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        "(materials science) A hardness scale based on the indentation hardness of a material."
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