Tycho Brahe's mural quadrant ('Quadrans muralis sive Tichonicus'), 1598. Tycho Brahe's mural quadrant in his Uraniborg observatory on the island of Hven. Illustration from 'Astronomia Instauratae Mechanica', by Tycho Brahe (1546-1601), 1598.

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Photo credit: © The History Emporium / Alamy / Afripics
License: Licensed
Model Released: No

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