{
  "518": {
    "_id": "dialface-518",
    "_rev": "2-be2a7f903933d39a5439e4bb25c29ec7",
    "id": 518,
    "type": "dialface",
    "thumb_baseurl": null,
    "metadata": {
      "General Information": {
        "DOI": "10.17171/1-1-5113",
        "Title": "Dialface ID 518",
        "Creator": "Berlin Sundial Collaboration",
        "Publisher": "Edition Topoi",
        "Publication Year": "2014",
        "Subtitle": "Unknown",
        "Description": "Information on the Dialface ID 518 / Object ID 387"
      },
      "Technical characteristics": {
        "Collection": "Ancient Sundials",
        "Contributor Name": "Gerd Graßhoff, Elisabeth Rinner",
        "Contributor Type": "Editor",
        "Resource Type": "Dataset",
        "Date (Update)": "2014"
      },
      "Specific attributes": {
        "Origin / Holder object": "None",
        "Inventory Number": "",
        "Holder digital source": "Exzellenzcluster 264 – Topoi"
      },
      "Conditions for use": {
        "Rights": "Creative Commons BY-NC-SA 3.0 DE"
      },
      "Annotations": {
        "Subjects": "History of Science, Archaeology",
        "Version": "1"
      },
      "References": [
        {
          "type": "article",
          "id": "Catamo2000",
          "citekey": "Catamo2000",
          "collection": "repository",
          "title": "Fifteen Further Greco-Roman Sundials from the Mediteranean Area and Sudan",
          "year": "2000",
          "author": [
            {
              "name": "Catamo, Mario"
            },
            {
              "name": "Lanciano, N."
            },
            {
              "name": "Locher, K."
            },
            {
              "name": "Lombadero, M."
            },
            {
              "name": "Valdes, M."
            }
          ],
          "journal": {
            "name": "Journal For The History of Astronomy",
            "volume": "XXXI",
            "pages": "203--221"
          },
          "pages": "p. 210 f."
        }
      ]
    },
    "origin_entry_num": 373,
    "holder_id": 0,
    "scis": {},
    "material_id": 11,
    "references_citations": [
      "\\cite{Catamo2000}, p. 210 f."
    ],
    "version_date": "20140917",
    "dating_str": "unknown",
    "site_filter_key": "italy/rome",
    "holder_filter_key": "unknown",
    "version_num": 1,
    "obj_descr": "Two large fragments of a white marble Roman cut spherical sundial, were found in the course of building work. By putting the two pieces together it was possible to reconstruct the sundial, although the upper part of the noon hour line is missing. ",
    "site_id": "ItalyRome",
    "material_filter_key": "marble",
    "type_filter_key": "sphere/spherical_cut_dials_central_gnomon_point",
    "dating_filter_key": [
      "not_dated"
    ],
    "obj_id": 387,
    "type_id": 3,
    "siteSpecific": "Grottarossa",
    "df_descr": "The absence of much of the noon hour line makes the usual calculations difficult. By a fairly easy reconstruction, however, the summer solstice curve gives an intended latitude of 32° while the winter solstice curve gives one of 34°. Both are very far from that of the site where the sundial was found, which is 42°. The angle between the oblique front and the rear vertical plane, which is 35°, shows the same discrepancy, but agrees quite closely with the calculated latitude. There are eleven hour lines, with hour-points satisfactorily equidistant, while the solstice curves are almost equidistant from the equinox line – 95 mm and 101 mm respectively. From an analysis of the sum of the data measured and calculated, this sundial seems to be well cut but not without constructional irregularities.",
    "references_bibliography": [
      "\\cite{Catamo2000}"
    ],
    "gibbs_number": "",
    "inventory_num": "",
    "thumb_file": null,
    "hierarchy_entries": [],
    "doi": "10.17171/1-1-5113",
    "holder": {
      "id": 0,
      "longitude": null,
      "department": null,
      "institution": null,
      "country": "Unknown",
      "filter_key": "unknown",
      "city": "Unknown",
      "name": "Unknown",
      "latitude": null
    },
    "material": {
      "id": 11,
      "category": "Marble",
      "subcategory": null,
      "filter_key": "marble"
    },
    "site": {
      "id": "ItalyRome",
      "country": "Italy",
      "filter_key": "italy/rome",
      "latitude": 41.8034,
      "longitude": 12.689,
      "city": "Rome",
      "name": "Rome, Italy"
    },
    "type_obj": {
      "id": 3,
      "category": "Sphere",
      "subcategory": "Spherical-cut dials--central gnomon point",
      "filter_key": "sphere/spherical_cut_dials_central_gnomon_point"
    },
    "resources": []
  }
}