Ulrich Rülein von Calw (1465–1523)
Born 1465 CE, died 1523 CE.
Ulrich Rülein von Calw (1465–1523) was a doctor, mathematician and well-known mining engineer. He was also active as a surveyor, town planner and astrologer and was the mayor (Bürgermeister) of the mining town of Freiberg for five years.
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