{
  "$type": "site.standard.document",
  "description": "Provided is a surveying instrument that reduces the burden of a centering work on a worker. A surveying instrument (1) capable of irradiating a spotlight (SL) as visible light for centering toward a position below a vertical axis of a surveying instrument main body (12) is configured such that that…",
  "path": "/patents/1396687",
  "publishedAt": "2026-05-06T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01B11/0608",
    "TOPCON CORP [JP]"
  ],
  "textContent": "Provided is a surveying instrument that reduces the burden of a centering work on a worker. A surveying instrument (1) capable of irradiating a spotlight (SL) as visible light for centering toward a position below a vertical axis of a surveying instrument main body (12) is configured such that that an irradiation shape of the spotlight (SL) is a toric shape. When visible light for centering which passes through a center point (O) of the surveying instrument (1) and is projected on a position right below the surveying instrument (1) is projected in a toric shape having a hole opened at a center like a donut shape, both of an inner circle and an outer circle can be recognized, and an outer shape of a measuring object on which a target point is set can also be used for alignment with the target point, so that many guides are provided, and it is easier for a worker to align the toric shape with the target point than a point shape, so that the burden of a centering work on the worker is reduced.",
  "title": "SURVEYING INSTRUMENT"
}