Matches in DBpedia 2015-10 for { ?s ?p "Astronomical rings (Latin: annuli astronomici), also known as Gemma's rings, are an early astronomical instrument. The instrument consists of three rings, the meridian, the equator, and the declination ring. It may be considered to be a simplified, portable armillary sphere, or a more complex form of astrolabe. Gemma Frisius was the designer of the astronomical rings in the 16th century. He was known as a physician, mathematician, cartographer, philosopher, and instrument maker."@en }
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- Astronomical_rings comment "Astronomical rings (Latin: annuli astronomici), also known as Gemma's rings, are an early astronomical instrument. The instrument consists of three rings, the meridian, the equator, and the declination ring. It may be considered to be a simplified, portable armillary sphere, or a more complex form of astrolabe. Gemma Frisius was the designer of the astronomical rings in the 16th century. He was known as a physician, mathematician, cartographer, philosopher, and instrument maker.".