Lazar (Serbian: Лазар; Russian: Лазарь), also known as Lazar the Serb or Lazar the Hilandarian (fl. 1404), was a Serbian Orthodox monk-scribe and horologist who invented and built the first known mechanical public clock in Russia in 1404. The clock, which also struck the hours, was built at the request of Grand Prince Vasily I of Moscow (r. 1389–1425).
Lazar (Serbian: Лазар; Russian: Лазарь), also known as Lazar the Serb or Lazar the Hilandarian (fl. 1404), was a Serbian Orthodox monk-scribe and horologist who invented and built the first known mechanical public clock in Russia in 1404. The clock, which also struck the hours, was built at the request of Grand Prince Vasily I of Moscow (r. 1389–1425).
Source: Wikipedia "Lazar the Serb" · CC BY-SA 4.0
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