Swiss clockmaker and mechanic.
Son of Jean Frédéric Leschot.
Pioneer of interchangeability in clockmaking by the invention of machine tools for Vacheron Constantin.
Design of the Swiss anchor escapement which his student, Antoine Léchaud, mass produced.
Invention of the pantograph which allows the standardisation and interchangeability of parts on watches fitted with the same calibre.
Gold Medal from the Arts Society for the invention of a hard rock perforator using black diamond chisels. This type of machine has been used to perforate several road and rail tunnels.