Stadia hair

{
  "id": "MLC-T-IND-005598",
  "term": "Stadia hair",
  "field": "Industrial and trades",
  "definition": "One of two short, parallel, horizontal lines etched on the reticle of a surveying telescope, positioned above and below the main horizontal crosshair. These hairs are used in conjunction with a stadia rod to determine distances by observing the interval intercepted on the rod. The spacing of these hairs is precisely calibrated for distance calculations.",
  "synonyms": [
    "stadia wire"
  ],
  "subject": "Surveying",
  "translations": {
    "de": "Stadiahärchen",
    "es": "hilo de estadía",
    "fr": "fil stadimétrique"
  },
  "url": "https://mlchart.com/terminology/industrial/stadia-hair/"
}