Famous watchmakers

Edward John Dent

1790 - 1853

Edward John Dent

English clockmaker and chronometer maker.

Key dates


Received an award for a chronometer.


Formulation of the secondary error (at medium temperatures) discovered by Ferdinand Berthoud in 1771. It is called the Dent anomaly or secondary error. Construction of a clock for the Royal Exchange.

Construction of Big Ben continued by his son-in-law, Frederick who used the gravity escapement invented by Edmund Beckett Denison.