{"arkId":"cl010110017","url":"https:\/\/collections.louvre.fr\/ark:\/53355\/cl010110017","modified ":"2025-08-25","title":"Anneau \u00e9quinoxial universel et son \u00e9tui","titleComplement":"","denominationTitle":[{"type":"Titre","value":"Anneau \u00e9quinoxial universel et son \u00e9tui"}],"displayDateCreated":"Epoque \/ p\u00e9riode : \u00e9poque moderne = Ancien R\u00e9gime (Occident)\r\n\r\nDate de cr\u00e9ation\/fabrication : vers 1750","currentLocation":"Sully, [OArt] Salle 609 - Nicolas et Simone Landau, Vitrine 3","room":"Salle 609, Aile Aile Sully, Niveau 1","isMuseesNationauxRecuperation":false,"dateCreated":[{"startYear":1750,"endYear":"","imprecision":"vers","text":"Milieu du XVIIIe si\u00e8cle","type":"Date de cr\u00e9ation\/fabrication","doubt":""}],"creator":[{"label":"Cole, Benjamin I","attributionLevel":"Attribution actuelle","linkType":"?","dates":[{"date":"1695","place":"","type":"date de naissance"},{"date":"1766","place":"","type":"date de mort"}],"creatorRole":"Fabricant, facteur","authenticationType":"marque (estampilles, poin\u00e7ons...)","doubt":"","attributedBy":"","attributedYear":"","wikidata":"Q2896033"}],"objectNumber":[{"value":"OA 10690","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 m\u00e9ridien est grav\u00e9 d\u2019un c\u00f4t\u00e9 de quatre \u00e9chelles de 90 degr\u00e9s orn\u00e9es d\u2019une frise de feuillage (divis\u00e9es en demi-degr\u00e9s et num\u00e9rot\u00e9es de dix en dix) ; deux des \u00e9chelles portent les mentions \u00ab N \u00bb et \u00ab S \u00bb pour les latitudes nord et sud. De l\u2019autre c\u00f4t\u00e9, une \u00e9chelle pour mesurer la hauteur du Soleil (divis\u00e9e en quart de degr\u00e9s et num\u00e9rot\u00e9e tous les 10 degr\u00e9s, 10-90) est munie \u00e0 son sommet d\u2019un orifice pour ins\u00e9rer un gnomon. L\u2019anneau de suspension et son curseur se positionnent par rapport \u00e0 ces \u00e9chelles en glissant dans deux rainures. Le cercle \u00e9quinoxial porte, sur son plat, l\u2019\u00e9chelle horaire (I-XII X 2, avec divisions de 2 minutes) et, sur sa tranche, la m\u00eame \u00e9chelle (num\u00e9rot\u00e9e toutes les 10 minutes) ; sur le deuxi\u00e8me plat se trouvent la signature et une autre \u00e9chelle des hauteurs du Soleil qui prolonge celle du cercle m\u00e9ridien quand l\u2019anneau est ferm\u00e9. Dans l\u2019axe des p\u00f4les, la lame diam\u00e9trale, orn\u00e9e de frises de feuillage, est actuellement mont\u00e9e \u00e0 l\u2019envers malgr\u00e9 les inscriptions \u00ab S \u00bb et \u00ab N \u00bb pour d\u00e9signer les p\u00f4les nord et sud. Su l\u2019une de ses faces, elle est inscrite d\u2019une \u00e9chelle zodiacale (chaque signe \u00e9tant divis\u00e9 en trois parties sous-divis\u00e9es en cinq) ainsi que d\u2019une \u00e9chelle de d\u00e9clinaison solaire (en divisions de demi-degr\u00e9s, num\u00e9rot\u00e9s 10, 20 X 2, avec la mention \u00ab AE \u00bb pour les \u00e9quinoxes au niveau du z\u00e9ro) ; sur l\u2019autre face, correspond une \u00e9chelle calendaire o\u00f9 les mois sont d\u00e9sign\u00e9s par leur initiale (avec graduation tous les 2 jours et les \u00e9quinoxes aux 11 septembre et 9 mars). L\u2019orifice pour recevoir les rayons du Soleil coulisse, le long de ces \u00e9chelles, au milieu d\u2019une plaquette munie d\u2019un filet pour index.\u0022 \r\n\u0022L\u2019\u00e9tui fermant par deux crochet est muni d\u2019un bras d\u00e9montable en deux parties, pour suspendre l\u2019anneau.\u0022 (Fr\u00e9montier-Murphy, 2002)","inscriptions":"Signature : \r ; \u0022 - Cole London - \u0022 (sur l\u0027un des plats du cercle \u00e9quinoxial)","namesAndTitles":"","onomastics":"","dimension":[{"type":"Longueur","value":"31","displayDimension":"31 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":1,"note":""},{"type":"Diam\u00e8tre","value":"26","displayDimension":"26 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":2,"note":""},{"type":"Epaisseur","value":"0,7","displayDimension":"0,7 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":3,"note":""},{"type":"Epaisseur","value":"5","displayDimension":"5 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":5,"note":""},{"type":"Longueur","value":"29","displayDimension":"29 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":6,"note":""},{"type":"Largeur","value":"28","displayDimension":"28 cm","unit":"cm","anteriorPrecision":"","posteriorPrecision":"","tri":7,"note":""}],"shape":"","materialsAndTechniques":"Mat\u00e9riau\/Technique : Anneau : alliage cuivreux, \u00e9mail noir, Etui : acajou\r\nMat\u00e9riau : alliage cuivreux\r\nTechnique : \u00e9maill\u00e9 = \u00e9maillage = \u00e9mail = \u00e9maux (techniques m\u00e9tal) (noir)\r\nMat\u00e9riau : acajou","placeOfCreation":"Londres (Grande-Bretagne = Grande Bretagne-\u003EAngleterre)","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"}],"place":[{"value":"Londres"}],"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. 104-105, N\u00b058","comparison":false}],"exhibition":[],"relatedWork":[],"image":[{"urlImage":"https:\/\/collections.louvre.fr\/media\/cache\/large\/0000000021\/0000110017\/0000239460_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000110017\/0000239460_OG.JPG","copyright":"\u00a9 2001 GrandPalaisRmn (mus\u00e9e du Louvre) \/ Jean-Gilles Berizzi","type":"","position":0},{"urlImage":"https:\/\/collections.louvre.fr\/media\/cache\/large\/0000000021\/0000110017\/0000239461_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000110017\/0000239461_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\/0000110017\/0000187486_OG.JPG","urlThumbnail":"https:\/\/collections.louvre.fr\/media\/cache\/small\/0000000021\/0000110017\/0000187486_OG.JPG","copyright":"\u00a9 1981 GrandPalaisRmn (mus\u00e9e du Louvre) \/ Photographe inconnu","type":"","position":2}]}