see the overview at http://en.wikipedia.org/wiki/Sadeler_family
training in copper engraving by his uncle Johann; since 1589 member of Zunft St. Johann; apprentice 1593 in Venice &Rome.
Czech Republic
Benjamin Bramer: Report on J. Bürgi's geometric triangulation instrument in the appendiex to Appolonius cattus oder Kern der Geometriae (Kassel 1648) ;
Court of Rudolf II. in Prague (since 1597 court engraver) ;
Joseph Heintz ; Bartholomäus Spranger ; Johann Jakob Stevens von Steinfels ; Adriaen de Vries ; -> A. Eisenhoit ; Jost Bürgi ;
astronomical copperplate engraving and drawing ; cartographical and topographical mapping ;
