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A chronometer (Ancient Greek: χρονόμετρον, khronómetron, "time measurer") is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation.
A chronograph is a watch that has a built-in stopwatch feature, which allows it to measure elapsed time. This feature is referred to as a complication. Chronograph watches typically have two or three subdials that display the hours, minutes, and seconds.
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.
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.
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.
These assess a movement’s precision under different conditions, including temperature variations (8°C, 23°C, and 38°C) and positional changes (like crown up, down, and horizontal). The watch must maintain a daily rate within a tight range of -4 to +6 seconds to pass.
What is a chronometer? Put simply, a chronometer is a highly accurate mechanical watch movement which has undergone a variety of different rigorous and strict tests to ensure its capabilities. These tests vary between different chronometer certification laboratories through factors such as the length under which the watches are tested.
Key Differences at a Glance: Purpose: A chronometer certifies precision, while a chronograph offers stopwatch functionality. Appearance: Chronographs typically have sub-dials (often two or three) on the watch face, used for the stopwatch function.
A chronometer is an instrument that measures time to exacting standards. It’s a watch that has been certified by the ‘Contrôle Officiel Suisse des Chronomètres’. Prized for their utmost accuracy and precision, chronometers must first pass a variety of tests to determine their capability.
In a nutshell, a chronometer is a watch that has been certified by some regulating body to be of very high accuracy, usually fitting into a fixed set of specifications. But it’s not quite that simple, as these specifications and testing methods vary greatly – so let’s explore further.