{
  "$type": "site.standard.document",
  "description": "Provided is a surveying instrument which allows an operator to determine a direction in which the surveying instrument is installed even when the surveying instrument is invisible. The surveying instrument is configured to emit a visible laser beam coaxial with or parallel in a vertical plane to a…",
  "path": "/patents/1389554",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C15/006",
    "TOPCON CORPORATION"
  ],
  "textContent": "Provided is a surveying instrument which allows an operator to determine a direction in which the surveying instrument is installed even when the surveying instrument is invisible. The surveying instrument is configured to emit a visible laser beam coaxial with or parallel in a vertical plane to a sighting axis as main laser-pointer light; and emit a laser beam in a different form from the main laser-pointer light, as auxiliary laser-pointer light at a predetermined angle to the main laser-pointer light in a vertical plane containing the main laser-pointer light.",
  "title": "SURVEYING INSTRUMENT AND SURVEYING METHOD"
}