{ "type":"FeatureCollection", "features":[ { "type":"Feature", "geometry":{ "type":"Point", "coordinates":[ "-2.300912", "51.041966" ] }, "properties":{ "id":"288714", "old_findID":"HAMP-A9E6F1", "uniqueID":"0014B7A9F6E01BBA", "objecttype":"COMPASS", "classification":"dial", "subclass":null, "length":"34.15", "height":null, "width":"33.3", "weight":"3.28", "thickness":"0.55", "diameter":null, "quantity":"1", "otherRef":"E2717; 11", "curr_loc":null, "discoveryMethod":"1", "treasureID":null, "broadperiod":"MEDIEVAL", "numdate1":"1430", "numdate2":"1500", "description":"
A slightly bent and damaged copper-alloy compass dial of late medieval date (c. 15th century). The disc has notched protrusions at the cardinal points. There is a small central perforation for a (now missing) needle. The upper surface is marked out with very finely incised lines. Lines connect opposite cardinal points and divide the field into quadrants. There is a double circle border within the circumference. There is also a double circle at the centre (max. dia.: c. 14.5mm). In the centre, within the border, is an 'elaborate' quatrefoil picked out with fine punches, with triangles emerging from the angles of the four leaves. Between the two double circles mentioned, at the cardinal points, are the letters 'S', 'O', 'm', and 'O', again picked out with fine punching. These initials represent the first letters of the points of the compass in Latin: Septentrio (north), Oriens (east), Meridies (south), Occidens (west). A parallel can be found illustrated in Margeson (1993, 71-72; ref. 447); although this was found in an 18th-century context the author argues for an early 16th-century date on the basis of the lettering style. Dr John Davis who has been studying this and related pieces suggests a late medieval date in the 15th century. This artefact has developed a mid\/dark-green patina with some fine pitting. It has been slightly bent in profile, and has suffered a small bend and crack at the circumference.<\/p>", "notes":"
As noted below by John Davis of the British Sundial Society this is likely to be the base of a composite object incorporating a sundial. Thanks are extended to him for these useful comments.<\/p>
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Dr Davis has had the compass base analysed to establish its metallurgical composition by B Gilmour in Oxford. It was shown to comprise 89.4% copper, 7.6% silver, with remaining 3.0% small parts tin, lead, iron and other elements. Compared to other medieval devices is has the highest copper content; the high levels of silver suggesting a silver-rich ore. Thanks are extended to the finder for passing this information on.<\/p>", "reuse":null, "reusePeriodID":null, "created":"2010-02-16 13:36:46", "updated":"2012-05-22 10:33:17", "secwfstage":"4", "findofnote":"1", "objecttypecert":"1", "datefound1":"2009-01-01", "datefound2":null, "inscription":"S O m O", "museumAccession":null, "subsequentAction":"1", "objectCertainty":"Certain", "dateFromCertainty":"1", "dateToCertainty":"1", "dateFoundFromCertainty":null, "dateFoundToCertainty":null, "subPeriodFrom":"3", "subPeriodTo":null, "objdate1period":"29", "objdate2period":null, "secuid":"0014B7A9F6E01BBA", "material1":"7", "material2":null, "manmethod":null, "decmethod":null, "decstyle":null, "complete":"3", "surface":null, "manufactureID":null, "culture":null, "smrRef":null, "hoardcontainer":null, "institution":"HAMP", "reason":null, "primaryMaterial":"Copper alloy", "primaryBMmaterial":"10627", "secondaryMaterial":null, "secondaryBMmaterial":null, "decoration":null, "style":null, "manufacture":null, "surfaceTreatment":null, "completeness":"Uncertain", "preservation":null, "periodFrom":"MEDIEVAL", "seneschalPeriodFrom":"MD", "bmPeriodFrom":"x14221", "periodoPeriodFrom":"p0gjgrsxwzx", "periodTo":null, "seneschalPeriodTo":null, "bmPeriodTo":null, "periodoPeriodTo":null, "reusePeriod":null, "ascribedCulture":null, "culturePeriodo":null, "cultureBM":null, "discmethod":"Metal detector", "fromCirca":"Circa", "toCirca":"Circa", "findSpotID":"287961", "countyID":"14362", "parishID":"14563", "districtID":"14451", "regionID":"41427", "fourFigure":"ST7927", "map25k":"ST7927", "map10k":"ST72NE", "knownas":null, "fourFigureLat":"51.041966", "fourFigureLon":"-2.300912", "woeid":null, "gridlen":"10", "geonamesID":null, "accuracy":"1", "what3words":null, "source":"GPS (from the finder)", "coinID":null, "obverseDescription":null, "obverseInscription":null, "reverseDescription":null, "reverseInscription":null, "cciNumber":null, "denominationID":null, "degreeOfWear":null, "allenType":null, "vaType":null, "mackType":null, "abcType":null, "bmcType":null, "reeceID":null, "dieAxis":null, "moneyer":null, "revtypeID":null, "categoryID":null, "typeID":null, "tribeID":null, "statusID":null, "rulerQualifier":null, "denominationQualifier":null, "mintQualifier":null, "dieAxisCertainty":null, "initialMark":null, "reverseMintMark":null, "statusQualifier":null, "ruler1":null, "ruler2":null, "mintID":null, "rrcID":null, "ricID":null, "tribe":null, "ironAgeRegion":null, "ironAgeArea":null, "denomination":null, "nomismaDenomination":null, "dbpediaDenomination":null, "bmDenomination":null, "primaryRuler":null, "viaf":null, "rulerDbpedia":null, "nomismaRulerID":null, "secondaryRuler":null, "periodName":null, "dateRange":null, "mintName":null, "nomismaMintID":null, "pleiadesID":null, "mintGeonamesID":null, "mintWoeid":null, "mintOsID":null, "mintGettyID":null, "mintWoeID":null, "mintDbPediaID":null, "mintWhat3Words":null, "mintBritMuseumID":null, "wear":null, "nomismaWear":null, "dieAxisName":null, "category":null, "type":null, "moneyerID":null, "nomismaMoneyer":null, "emperorID":null, "romanMintID":null, "reverseType":null, "status":null, "jettonClass":null, "jettonType":null, "jettonGroup":null, "thumbnail":"https:\/\/finds.org.uk\/images\/thumbnails\/239294.jpg", "filename":"HAMP-A9E6F1compassdial.jpg", "filesize":"1487581", "imageLabel":"Post-medieval compass dial", "imageCopyrightHolder":"Winchester Museum Service", "imageLicense":"5", "imagedir":"images\/rwebley\/", "region":"South West", "rallyID":null, "rallyName":null, "rallyDateFrom":null, "rallyDateTo":null, "landuse":null, "landvalue":"Cultivated land", "regionType":"European Region", "countyType":"County", "county":"Dorset", "districtType":"District", "district":"North Dorset", "parishType":"Civil Parish", "centreLat":"51.0436", "centreLon":"-2.29379", "parish":"Gillingham", "subsequentActionTerm":"Returned to finder", "bmThesObject":null, "seneschalObject":"95253", "url":"https:\/\/finds.org.uk\/database\/artefacts\/record\/id\/288714" }, "id":"288714" } ] }