Wandelstok - Wandelstok met zwaar messing handvat en natuurkijker - Rozenhout - Messing
Nr. 23823579
A Paris Chez G. Gobille a P Ache Royalle - Armillair gebied / sferische astrolabium - messing
Nr. 23823579
A Paris Chez G. Gobille a P Ache Royalle - Armillair gebied / sferische astrolabium - messing
Antique astronomical instrument - an armillary sphere is a model of the celestial sphere invented by Eratosthenes in 255 BC. It consists of loops called rings, usually made of metal, each of which represents one of the circles of the celestial sphere. The fixed armillae represent the Meridian and the horizon, while the moving rings, which follow the diurnal rotation, indicate the equator, the ecliptic, the solstitial colure and other circles of the celestial sphere.
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