Hydrometer

{
  "id": "MLC-T-MET-006342",
  "term": "Hydrometer",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument used to measure the specific gravity or relative density of liquids, which indicates the concentration of dissolved substances. It consists of a sealed glass tube with a weighted bulb at one end and a graduated stem at the other. The hydrometer floats at different depths depending on the liquid's density, with readings taken from the scale at the liquid surface.",
  "url": "https://mlchart.com/terminology/meteorology/hydrometer/"
}