Edward John Dent (1790–1853) was a famous English watchmaker noted for his highly accurate clocks and marine chronometers.
Edward John Dent
Pocket watch by Arnold and Dent hallmarked 1835
A 1931 advertisement by E. Dent & Co. Ltd.
John Arnold was an English watchmaker and inventor.
Chronometer-maker John Arnold (attributed to Mason Chamberlin, ca. 1767)
Pocket watch by Arnold and Dent hallmarked 1835