Celestial globe with clockwork

This globe houses a movement made by Gerhard Emmoser, imperial clockmaker from 1566 until his death in 1584, who signed and dated the meridian ring. The movement, which has been extensively rebuilt, rotated in the celestial sphere and drove a small image of the sun along the path of the ecliptic. The hour was indicated on a dial mounted at the top of the globe's axis and the day of the year appeared on a calendar rotating in the instrument's horizon ring.

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