{
  "$type": "site.standard.document",
  "description": "A surveying staff for an electronic levelling instrument comprises a substrate on which a short-range barcode (14) for height measurement within the near field of view of the instrument is engraved. The short-range barcode (14) is scaled down with respect to a barcode (13) for regular measurement…",
  "path": "/patents/994072",
  "publishedAt": "2013-01-09T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C15/06",
    "TOPCON CORP [JP]"
  ],
  "textContent": "A surveying staff for an electronic levelling instrument comprises a substrate on which a short-range barcode (14) for height measurement within the near field of view of the instrument is engraved. The short-range barcode (14) is scaled down with respect to a barcode (13) for regular measurement and is in a monochrome pattern which is the reverse of that of the regular barcode (13).",
  "title": "Surveying staff for electronic levelling instrument"
}