A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation...
43 KB (4,803 words) - 20:12, 26 April 2024
marked as Certified Chronometer or Officially Certified Chronometer. Outside Switzerland, equivalent bodies, such as the Japan Chronometer Inspection Institute...
9 KB (1,105 words) - 03:12, 26 June 2024
Clock (redirect from Chronometer)
A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals...
96 KB (11,230 words) - 01:55, 25 August 2024
John Harrison (redirect from H4 chronometer)
1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of calculating longitude...
53 KB (6,806 words) - 01:53, 16 August 2024
Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during...
9 KB (1,388 words) - 06:02, 17 November 2023
Thomas Mercer Chronometers is a British company specialising in the design and production of bespoke chronometers. The story begins with John Harrison...
10 KB (1,113 words) - 13:18, 29 April 2024
Contrôle officiel suisse des Chronomètres (COSC), the Official Swiss Chronometer Testing Institute, is the institute responsible for certifying the accuracy...
23 KB (2,628 words) - 07:19, 6 November 2023
Hamilton Watch Company (section Marine chronometers)
participate in domestically mass-producing chronometers. Hamilton was provided with two Swiss Ulysse Nardin marine chronometers to examine. Hamilton successfully...
19 KB (2,154 words) - 06:37, 12 August 2024
An observatory chronometer is a timepiece that has passed stringent testing and a slate of accuracy tests. Thus, the "observatory trial" developed as...
7 KB (855 words) - 18:39, 10 October 2023
Navigation (section Marine chronometer)
lacking a chronometer used the method of lunar distances to determine Greenwich time to find their longitude. A mariner with a chronometer could check...
62 KB (7,333 words) - 07:47, 27 May 2024