Blow a backsight

{
  "id": "MLC-T-IND-000627",
  "term": "Blow a backsight",
  "field": "Industrial and trades",
  "definition": "A colloquial expression in surveying indicating an error or mistake made when taking a backsight reading. This error can result from misreading the rod, improper leveling of the instrument, or incorrect recording of the data. A blown backsight introduces inaccuracies that propagate through all subsequent measurements in a survey traverse or level loop.",
  "subject": "Surveying",
  "references": [
    "Survey Pro Field Software User Guide (Spectra Geospatial)"
  ],
  "translations": {
    "de": "Rückblick vergessen",
    "es": "equivocarse en la lectura de la mira atrás",
    "fr": "faire une erreur de visée arrière"
  },
  "url": "https://mlchart.com/terminology/industrial/blow-a-backsight/"
}