I also couldn’t find accuracy stats online or any form of explanation of how it is so accurate. The Copenhagen museum states that only atomic clocks are more ac

I also couldn’t find accuracy stats online or any form of explanation of how it is so accurate. The Copenhagen museum states that only atomic clocks are more accurate than the Jens Olsen clock, but there is no support for the claim. For a mechanical clock that needs to be wound once week I find it hard to believe it is more accurate than a high accuracy quartz with plus minus 10 seconds a year. Maybe they reset the time each time it is wound.