An observatory chronometer is a timepiece that has passed stringent testing and a slate of accuracy tests. Thus, the "observatory trial" developed as the...

necessary to pass the Observatory standards, there are very few observatory chronometers in existence. Most observatory chronometers had movements so specialized...

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...

metronome Chronometer watch, a highly accurate watch Marine chronometer, a timekeeper used for marine navigation, as in Longitude by chronometer Observatory chronometer...

at the Observatory at Besançon, however, today only a very few watches are currently tested there and carry the accolade "Observatory Chronometer". The...

Marche from an observatory became known as an Observatory Chronometer, and such were issued a chronometer reference number by the Observatory. The role of...

Marche from an observatory became known as an Observatory Chronometer, and such were issued a chronometer reference number by the Observatory. The role of...

Marche from an observatory became known as an Observatory Chronometer, and was issued a chronometer reference number by the observatory. The role of the...

bulletin from an observatory became known as an Observatory Chronometer, and such were issued a chronometer reference number by the Observatory. The role of...

Board of Admiralty; at that time the observatory was charged with maintaining the Royal Navy's marine chronometers. 1833 Daily time signals began, marked...

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...

A nautical chronometer made by Thomas Earnshaw (1749–1828), and once part of the equipment of HMS Beagle, the ship that carried Charles Darwin on his...

improvements to the transit clock at the Royal Greenwich Observatory in London and his invention of a chronometer escapement and a form of bimetallic compensation...

resources Coordinated Universal Time (UTC) Naval Observatory Vector Astrometry Subroutines railroad chronometer time ball Time signal time service radio stations...

using chronometers to determine longitude of the features along the way. Arriving at the bay he named Port Lincoln, he set up a shore observatory, and...

1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of how to calculate...

Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during...

2022. Retrieved February 3, 2023. "Technical Challenges at the Observatory Chronometer Competition in Switzerland". Seiko Holdings Corporation. Archived...

The Omega Marine Chronometer was the first quartz wristwatch ever to be awarded certified status as a marine chronometer. The watch was made by Omega...

1914, Mathey-Tissot was represented at the Kew Observatory Competition by six Observatory Chronometers capable of split-second timing, all six being rated...

Astronomical Observatory de Neuchâtel in recognition of the accomplishments of the Manufacture generally, and specifically for the Observatory Chronometer wristwatch...

niche, and marine chronometers used by United States ships were imported or used foreign key components. The U.S. Naval Observatory had asked American...

The Master Chronometer Certification debuted on the Globemaster but they now offer it across many more of its watch collections. Observatory trials focused...

A railroad chronometer or railroad standard watch is a specialized timepiece that once was crucial for safe and correct operation of trains in many countries...

Marine chronometer – Clock used on ships to aid in navigation Radio clock – Clock which synchronizes its time using radio transmitters Royal Observatory, Greenwich –...

2021-05-10. "Eric Clapton's 2499 Sells For $3.65 Million, JB Champion's Observatory Chronometer Sells For $4 Million, And The Platinum 1579 Goes For $1.63 Million"...

oceans of the earth." An observatory represented a place of certitude of time and place, a place to set a marine chronometer for use at sea, where longitude...

Chronometers were formerly used for the accurate determination of longitude by ships at sea. By measuring the time of local solar noon compared to the...

The Berlin Observatory (Berliner Sternwarte) is a German astronomical institution with a series of observatories and related organizations in and around...

three of Kendall's chronometers had been to Australia by August 1788, one of them twice. K3 is also now kept at the Royal Observatory, Greenwich. In 1978...