{
  "$type": "site.standard.document",
  "description": "The instrument has a housing (1) fastened to a vertical surface e.g. tile (4) or room wall (5), by a fastener. A light beam device associated with the housing irradiates a light beam (7) emerging on the vertical surface as a line. A level indicator (8) brings the housing into a defined rotational…",
  "path": "/patents/993565",
  "publishedAt": "2013-01-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C15/008",
    "WOLFCRAFT GMBH [DE]"
  ],
  "textContent": "The instrument has a housing (1) fastened to a vertical surface e.g. tile (4) or room wall (5), by a fastener. A light beam device associated with the housing irradiates a light beam (7) emerging on the vertical surface as a line. A level indicator (8) brings the housing into a defined rotational position relative to a horizon. The level indicator is rotatably associated with a level carrier (9) assigned to the housing. The housing is fastenable with a reversible adhesive agent in any rotational position and lateral position at a retaining plate (2) forming the fastener. The retaining plate is made from a ferromagnetic material. The light beam device is a semiconductor laser. The adhesive agent is a hook and loop fastener.",
  "title": "Levelling device"
}