Cronometer: Eat smarter. Live better.
网页Count your calories, ensure you're meeting nutrient targets, and see your progress over time. Log your meals and track all your macro and micronutrients. Plus, you can create custom foods, recipes, exercises and metrics. Learn …
Marine chronometer - Wikipedia
网页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. It is used to determine longitude by comparing Greenwich Mean Time (GMT), and the time at the current location found from observations of celestial bodies.
Chronometer watch - Wikipedia
网页Chronometer watch. Inside a chronometer mechanism (c. 1904) A chronometer (Ancient Greek: χρονόμετρον, khronómetron, "time measurer") is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation.
Chronometer | Precision Timekeeping, History & Uses | Britannica
网页Chronometer, portable timekeeping device of great accuracy, particularly one used for determining longitude at sea. Although there were a couple of earlier isolated uses, the word was originally employed in 1779 by the English clock maker John Arnold to describe his sensationally accurate pocket.
What is a Chronometer? - Exquisite Timepieces
网页3 天之前 · German Chronometer Standard. The German Chronometer Standard is a certification similar to Switzerland’s COSC but one that is dedicated to testing the accuracy of German-made watches like those from Glashutte Original. The standard is found under certification DIN 8319, with specifications equivalent to those of the ISO 3159.
Chronometer Definition & Meaning - Merriam-Webster
网页The meaning of CHRONOMETER is timepiece; especially : one designed to keep time with great accuracy despite external forces. How to use chronometer in a sentence.
Harrison's Marine Chronometer - World History Encyclopedia
网页2023年3月14日 · John Harrison (1693-1776) invented an accurate marine chronometer after several decades of research and development. While the pendulum clock had already been invented in the 17th century, a clock that could withstand the vagaries of the sea, humidity, and air temperature remained an elusive dream. Harrison's last watch, the H5 …
Precision Timing: What Is A Chronometer And Why Does It …
网页2020年8月8日 · A chronometer is not to be confused with a chronograph – that’s any watch with a stopwatch function for measuring time. A chronometer watch is essentially a fine-tuned watch that keeps better time than most.
What is does chronometer mean on a watch? | Longines US
网页Often misunderstood or confused with a chronograph, a chronometer is fundamentally a highly accurate mechanical watch movement that has undergone – and passed – strict precision tests over a period of time in a host of different circumstances. Chronometer testing measures the movement of the watch towards a set of accuracy standards, in ...
Chronometer - Encyclopedia.com
网页2018年5月8日 · chronometer. The design, construction, and successful replication of marine chronometers, or precision timekeepers, was one of the great scientific triumphs of the early modern period. This scientific instrument was crucial to the accurate determination of longitude (or east-west direction from a given meridian on the globe) to vessels at sea.