The Ling Long Yi is similar to an abridged armilla except larger, more complex, and more accurate.
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Eratosthenes used most probably a solstitial armilla for measuring the obliquity of the ecliptic.
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The first was an equinoctial, the second a solstitial armilla.
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Eratosthenes most probably used a solstitial armilla for measuring the obliquity of the ecliptic.
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The abridged or simplified armilla was used to measure the angle of the sun, as well as the position of any celestial body.
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Ecliptic armilla, armillary sphere, six feet in diameter, used to measure the ecliptic longitude difference and latitudes of celestial bodies.
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In its simplest form, consisting of a ring fixed in the plane of the equator, the armilla is one of the most ancient of astronomical instruments.
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He has been credited with inventing the gnomon, the square table, the abridged or simplified armilla, and a water powered armillary sphere called the Ling Long Yi.
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Armillary sphere: a celestial globe consisting of metal hoops; used by early astronomers to determine the positions of stars
(archeology) a bracelet worn around the wrist or arm
An armilla (plural armillae) was a gold armband awarded as a military decoration to soldiers of ancient Rome.
(Armillae) The Armills (from the Latin: armillae) are a type of bracelet, one of the garments that are included in a regalia, symbolically known as the bracelets of wisdom and sincerity. Armills have been used in many coronations. ...