Watch type

(Greek Chronos = time, metrein = to measure very accurate timepiece)

A chronometer is a precision watch that is regulated in different positions and at different temperatures, and which has received an official certificate of the performed chronometer certification by a neutral official authority.

The development of chronometers began with an announcement of the British Parliament in the year 1714 the Act of the Queen Anne (Act of Parliament).

For more details and history of the official chronometer certification, see

• Chronometer certification

• Das große Uhrenlexikon; Author Fritz von Osterhausen; ISBN 3898804305
• Armbanduhren, Chronometer. Mechanical Präzisionsuhren and ihre Prüfung; Author Fritz von Osterhausen; ISBN 3766712292
• Das ZEITGEFÜHL-Uhrenbuch; Author Gerd-Lothar Reschke; ISBN 3-938607-61-0