{"arkId":"cl010098935","url":"https:\/\/collections.louvre.fr\/ark:\/53355\/cl010098935","modified ":"2025-12-01","title":"Cadran solaire \u00e9quinoxial universel et son \u00e9tui","titleComplement":"","denominationTitle":[{"type":"Titre","value":"Cadran solaire \u00e9quinoxial universel et son \u00e9tui"}],"displayDateCreated":"Epoque \/ p\u00e9riode : \u00e9poque moderne = Ancien R\u00e9gime (Occident)\r\n\r\nDate de cr\u00e9ation\/fabrication : vers 1740","currentLocation":"Sully, [OArt] Salle 609 - Nicolas et Simone Landau, Vitrine 2","room":"Salle 609, Aile Aile Sully, Niveau 1","isMuseesNationauxRecuperation":false,"dateCreated":[{"startYear":1740,"endYear":"","imprecision":"vers","text":"2e quart du XVIIIe si\u00e8cle","type":"Date de cr\u00e9ation\/fabrication","doubt":""}],"creator":[{"label":"Willebrand, Johann Martin","attributionLevel":"Attribution actuelle","linkType":"","dates":[{"date":"1714","place":"","type":"date de naissance"},{"date":"1742","place":"","type":"date de mort"}],"creatorRole":"Fabricant, facteur","authenticationType":"marque (estampilles, poin\u00e7ons...)","doubt":"","attributedBy":"","attributedYear":"","wikidata":""}],"objectNumber":[{"value":"OA 10709","type":"Num\u00e9ro principal"}],"collection":"D\u00e9partement des Objets d\u0027art du Moyen Age, de la Renaissance et des temps modernes","printsDrawingsEntity":"","printsDrawingsCollection":"","objectType":"instrument scientifique (mesure, calcul, observation, etc.)","originalObject":"","printState":"","description":"\u0022Le cercle \u00e9quinoxial du cadran est mont\u00e9 par l\u2019interm\u00e9diaire d\u2019une charni\u00e8re sur une platine octogonale grav\u00e9e d\u2019une bordure \u00e0 filet. Ce cercle, orn\u00e9 d\u2019une frise sur son pourtour, est affin\u00e9 dans sa partie sup\u00e9rieure, tandis que sur le reste de sa tranche une lame plus large porte l\u2019\u00e9chelle horaire (3-12-9, avec divisions jusqu\u2019au quart d\u2019heure). Le gnomon en forme d\u2019aiguille est situ\u00e9 au centre d\u2019un axe diam\u00e9tral ; un syst\u00e8me de ressort permet de diriger sa pointe vers le haut au printemps et en \u00e9t\u00e9, et vers le bas \u00e0 l\u2019automne et en hiver. Sur le c\u00f4t\u00e9 du cercle, une encoche avec une main grav\u00e9e servant d\u2019index coulisse le long d\u2019un arc de latitudes mont\u00e9 sur charni\u00e8re et grav\u00e9 de 0\u00b0 \u00e0 90\u00b0 (en divisions de 2 degr\u00e9s, num\u00e9rot\u00e9es de dix en dix, 20-90) ; cet arc est orn\u00e9 d\u2019une feuille d\u2019acanthe \u00e0 son extr\u00e9mit\u00e9. Une boussole (fix\u00e9e au dos par trois vis dont une manque) porte sur son fond la direction des quatre points cardinaux d\u00e9sign\u00e9s par les deux premi\u00e8res lettres de leur nom en latin ; une fl\u00e8che situe la d\u00e9clinaison magn\u00e9tique \u00e0 environ 15\u00b0 ouest. L\u2019aiguille a aussi la forme d\u2019une fl\u00e8che. Sur un support rabattable sculpt\u00e9 de rinceaux, un plomb vise sur une pointe.\r\nLe dos de l\u2019instrument est grav\u00e9 de la signature et, sur le tambour de la boussole, d\u2019une table des latitudes (en degr\u00e9s) de trente-six villes europ\u00e9ennes. La lamelle servant de ressort au plomb est d\u00e9cor\u00e9e de feuillages \u00e0 ses extr\u00e9mit\u00e9s. Trois pieds \u00e0 balustre soutiennent le cadran. \u0022\r\n\u0022L\u2019\u00e9tui poss\u00e8de un crochet de fermeture.\u0022 (Fr\u00e9montier-Murphy, 2002)","inscriptions":"Signature : \r ; \u0022JohannMartinWillebrand\u00b7inAugsp.48.\u0022 (au dos de la platine octogonale)","namesAndTitles":"","onomastics":"","dimension":[{"type":"Hauteur","value":"1,4","displayDimension":"1,4 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":1,"note":""},{"type":"Longueur","value":"5,3","displayDimension":"5,3 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":3,"note":""},{"type":"Largeur","value":"5","displayDimension":"5 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":4,"note":""},{"type":"Longueur","value":"6,2","displayDimension":"6,2 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":5,"note":""},{"type":"Largeur","value":"5,8","displayDimension":"5,8 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":6,"note":""},{"type":"Epaisseur","value":"1,8","displayDimension":"1,8 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":7,"note":""}],"shape":"","materialsAndTechniques":"Mat\u00e9riau\/Technique : argent, alliage cuivreux dor\u00e9, verre, acier bleui, \u00e9mail noir (le cadran), chagrin noir, soie rose (l\u0027\u00e9tui)\r\nMat\u00e9riau : acier\r\nMat\u00e9riau : alliage cuivreux\r\nMat\u00e9riau : argent\r\nMat\u00e9riau : chagrin\r\nMat\u00e9riau : soie\r\nMat\u00e9riau : verre\r\nTechnique : bleui (techniques m\u00e9tal)\r\nTechnique : dor\u00e9 = dorure (techniques m\u00e9tal)\r\nTechnique : \u00e9maill\u00e9 = \u00e9maillage = \u00e9mail = \u00e9maux (techniques m\u00e9tal)","placeOfCreation":"Augsbourg = Ausgburg (Allemagne-\u003EBavi\u00e8re)","dateOfDiscovery":"","placeOfDiscovery":"","provenance":"","historicalContext":[],"objectHistory":"Collection Nicolas Landau (1887-1979) ; legs Marcelle Landau, 1980","jabachInventory":"","napoleonInventory":"","previousOwner":[{"value":"M. Landau, Nicolas","note":"","role":", Collectionneur"},{"value":"Mme Landau, Marcelle","note":" (don d\u0027un ensemble de 166 instruments scientifiques, en ex\u00e9cution des volont\u00e9s de son \u00e9poux Nicolas Landau)","role":", Donateur"}],"acquisitionDetails":[{"mode":"don manuel","doubt":"","dates":[{"type":"date","value":"1979","startYear":1979,"endYear":1979},{"type":"date de l\u0027arr\u00eat\u00e9\/d\u00e9cision","value":"22\/11\/1979","startYear":1979,"endYear":1979}]}],"ownedBy":"Etat","heldBy":"Mus\u00e9e du Louvre, D\u00e9partement des Objets d\u0027art du Moyen Age, de la Renaissance et des temps modernes","longTermLoanTo":"","index":{"Mode d\u0027acquisition":[{"value":"don manuel"}],"Period":[{"value":"\u00e9poque moderne = Ancien R\u00e9gime"}],"Places":[{"value":"Augsbourg = Ausgburg"}],"objectType":[{"value":"instrument scientifique (mesure, calcul, observation, etc.)"}]},"bibliography":[{"bibliographyRef":"Fr\u00e9montier-Murphy, Camille, Les Instruments de math\u00e9mathiques, XVIe-XVIIIe si\u00e8cle : cadrans solaires, astrolabes, globes, n\u00e9cessaires de math\u00e9matiques, instruments d\u0027arpentage, microscopes, Paris, R\u00e9union des mus\u00e9es nationaux (RMN), 2002","bibliographyDate":"2002","bibliographyDetail":"p. 89, N\u00b0 44","comparison":false}],"exhibition":[],"relatedWork":[],"image":[{"urlImage":"https:\/\/collections.louvre.fr\/media\/cache\/original\/0000000021\/0000098935\/0000187545_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000098935\/0000187545_OG.JPG","copyright":"\u00a9 2001 GrandPalaisRmn (mus\u00e9e du Louvre) \/ Jean-Gilles Berizzi","type":"","position":0},{"urlImage":"https:\/\/collections.louvre.fr\/media\/cache\/original\/0000000021\/0000098935\/0000187546_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000098935\/0000187546_OG.JPG","copyright":"\u00a9 2001 GrandPalaisRmn (mus\u00e9e du Louvre) \/ Jean-Gilles Berizzi","type":"","position":1},{"urlImage":"https:\/\/collections.louvre.fr\/media\/cache\/original\/0000000021\/0000098935\/0000187544_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000098935\/0000187544_OG.JPG","copyright":"\u00a9 1980 GrandPalaisRmn (mus\u00e9e du Louvre) \/ Photographe inconnu","type":"","position":2}]}