page_title: Instrument of the Primum Mobile
hierarchical_section_title: Instrument of the Primum Mobile
caption_attribution_description: English: AuthorPeter Apianus; Egnazio DantiDescription English: Instrument of the "Primum Mobile". Italiano: Strumento del Primo Mobile. Date1568MediumbrassDimensionsheight 279 mmCurrent location (Inventory)Museo Galileo&#160;&#160;Native nameMuseo GalileoLocationFlorenceCoordinates43°&#160;46′&#160;04″&#160;N, 11°&#160;15′&#160;21″&#160;E&#160; &#160;Established1930Websitewww.museogalileo.itAuthority control VIAF: 139974525 LCCN: no2010157919 WorldCat Room IAccession number2643Place of creationFlorenceSource/PhotographerOwn work This file was provided to Wikimedia Commons by Museo Galileo as part of a GLAM-WIKI project with Wikimedia Italia. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information. italiano&#160;| English&#160;| +/− English: Instrument of the "Primum Mobile". Italiano: Strumento del Primo Mobile.
context_page_description: The Instrument of the Primum Mobile is also called the quadrant of Petrus Apianus, because he invented it and described it in the treatise Instrumentum primi mobilis. The instrument is used to find sines and cosines. It bears the initials "F.E.D.P.F." [Frater Egnatius Dantis Predicatorum Fecit]. Ignazio Danti dedicated it to Cosimo I de' Medici, as attested by the Medici coat of arms engraved on the front. The instrument was depicted on the ceiling of the Stanzino delle Matematiche in the Uffizi Gallery.
context_section_description: The Instrument of the Primum Mobile is also called the quadrant of Petrus Apianus, because he invented it and described it in the treatise Instrumentum primi mobilis (Nuremberg, 1524). The instrument is used to find sines and cosines. It bears the initials "F.E.D.P.F." [Frater Egnatius Dantis Predicatorum Fecit]. Ignazio Danti dedicated it to Cosimo I de' Medici, as attested by the Medici coat of arms engraved on the front. The instrument was depicted on the ceiling of the Stanzino delle Matematiche in the Uffizi Gallery.
caption: Instrument of the Primum Mobile. Medici collections, Museo Galileo
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