![]() The energy drawn from the movement of the wrist by oscillating weights transmits to the gears to power the watch to function. Image Credit: Francis Flinch via Creative CommonsĪutomatic watches have double or more moving parts than quartz watches. This process is cost-heavy along with the cost of testing, which warrants the high price of these automatic watches. These movements take highly skilled craftsmen to design, develop and hand-assemble before qualifying for the COSC testing. You may also notice that watches with COSC certification don’t come cheap. Generally, it is a 16-days long testing period where the movement undergoes different temperature settings at different positions. ![]() Watches that go through the COSC testing undergo various rounds of rigorous testing under different conditions. If your watch comes with a COSC certification, you can blindly believe that the watch is as precise as it can be. It is a rule that only watches with COSC certification can officially use the tag ‘certified chronometer’ as part of the watch description. To ensure the legitimacy of its function, a Switzerland-based NGO called the Contrôle Officiel Suisse des Chronomètres or COSC offers official certification when watches pass their testing for accuracy. What Are COSC-Certified Chronometers?Ĭhronometers are components of mechanical and automatic watches, placed to increase efficiency and accuracy of the movement. However, if you want a watch for regular daily wear, then a 10 or 20-second variation in a day will make no difference. If you are a diver or a pilot, for instance, you will want your watch to be as accurate as possible with as little deviation in seconds. Therefore, what is acceptable to you depends on your needs and the functions of the watch. Most often, watch enthusiasts who rely on extreme accuracy and precision look for close to 4-5 seconds variations, or even lesser, in a day. This will inform you of how accurate your watch is. Typically, brands provide the details of the movement, its precision, and accuracy along with the watch description. ![]() On a bigger picture, reports indicate that a standard automatic watch is generally 99% accurate. To the extent, they either gain or lose only 25 seconds per day. Image Credit: Unknown author via Creative CommonsĪutomatic watches are pretty accurate. What’s Acceptable Accuracy For an Automatic Watch?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |