George Daniels says from Abraham-Louis Breguet that he built an international reputation without equivalence in the history of watchmaking. He distinguished himself with his prestigious inventions, whose many are still used nowadays, starting with the tourbillon and the wristwatch. This extraordinary career brought him several distinctions: Official Horologer to the French Royal Navy, Member of the Academy of Sciences or Knight of the Legion of Honor. He passes in 1823, at the age of 76 years.
Invention of the Ocular of an astronomical telescope permitting the measurement of “tenths of seconds and even, approximately, hundredths”.