Comb nephoscope

{
  "id": "MLC-T-MET-004530",
  "term": "Comb nephoscope",
  "field": "Meteorology and atmospheric science",
  "definition": "An instrument used to determine the direction and speed of cloud movement by observing their passage relative to a series of parallel bars or teeth. The observer aligns the comb with the cloud's motion and times its transit across a known angular distance. This device provides a simple, visual method for estimating cloud velocity.",
  "synonyms": [
    "Besson nephoscope"
  ],
  "url": "https://mlchart.com/terminology/meteorology/comb-nephoscope/"
}