1776-1856

French mathematician and clockmaker.

Production of edifice clocks.

1838-1842

Construction of the third astronomical clock of Strasbourg cathedral (with Albert and Théodore Ungerer). Combining mathematical solutions and ingenious mechanical solutions such as a celestial globe with equinox precision, solar and moon equations and an ecclesiastic comput (calendar); it is considered to be one of the most sophisticated and complex monumental clocks.