IMG_4146 (1)

A large sextant built by engineer Erasmus Habermehl in the late 16th century on the order of Emperor Rudolf II. It may have been used by Tycho Brahe. On display at Prague’s National Technical Museum. Photo by Mark Baker.

A large sextant built by engineer Erasmus Habermehl in the late 16th century on the order of Emperor Rudolf II, which may have been used by Tycho Brahe, is on display at Prague’s National Technical Museum.

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