"Eggertz tube" meaning in English

{
  "forms": [
    {
      "form": "Eggertz tubes",
      "tags": [
        "plural"
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  "head_templates": [
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      "args": {},
      "expansion": "Eggertz tube (plural Eggertz tubes)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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      "examples": [
        {
          "ref": "1895, Journal of the Society of Chemical Industry, volume 14, page 1022:",
          "text": "The depth of liquid looked through in the Eggertz tubes is so small that the operator has not much difficulty in rapidly adjusting the liquids […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "A graduated tube used in determining the carbon content of steel."
      ],
      "id": "en-Eggertz_tube-en-noun-mYYQfonU",
      "links": [
        [
          "graduated",
          "graduated"
        ],
        [
          "tube",
          "tube"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "content",
          "content"
        ],
        [
          "steel",
          "steel"
        ]
      ]
    }
  ],
  "word": "Eggertz tube"
}

{
  "forms": [
    {
      "form": "Eggertz tubes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Eggertz tube (plural Eggertz tubes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
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      "examples": [
        {
          "ref": "1895, Journal of the Society of Chemical Industry, volume 14, page 1022:",
          "text": "The depth of liquid looked through in the Eggertz tubes is so small that the operator has not much difficulty in rapidly adjusting the liquids […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "A graduated tube used in determining the carbon content of steel."
      ],
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        [
          "graduated",
          "graduated"
        ],
        [
          "tube",
          "tube"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "content",
          "content"
        ],
        [
          "steel",
          "steel"
        ]
      ]
    }
  ],
  "word": "Eggertz tube"
}