Wind vane

{
  "id": "MLC-T-MET-010269",
  "term": "Wind vane",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument that indicates wind direction, consisting of a fin or other shape mounted on a vertical axis so it can rotate freely. The fin aligns itself with the airflow, pointing into the direction from which the wind is blowing. A standard wind vane is installed 10 meters above the ground in an open area, away from obstructions that could create turbulence.",
  "url": "https://mlchart.com/terminology/meteorology/wind-vane/"
}