How fast is your watch?

[116610]

My sub rep runs + 1-2 seconds a day. Do gen watches really run +4-5 seconds per day and that's within expected limits? What are others experiences? What do people do to regulate? Place it cg up etc?

[Nanuq]

Good questions, do lots of searching here, there are dozens of topics about it. You've got COSC performance already, good job!

[freddy333]

[FxrAndy]

I have known gens running a lot worse than that

[rosnik]

I have known gens running a lot worse than that

+1!

I got some...

[gran]

It is important to remember that even when a mechanical watch is allowed to vary +6/-4 seconds per day, that does not mean it will consistently vary by that high an amount each day. Mechanical movements--except the very rare 'turbillon' movements that correct for it--are noticably affected by the gravitational pull of the Earth. It only takes a performance distortion of 1/1000th of a percent for a watch movement to be one second less accurate in a day. This causes the performance of mechanical movements to be somewhat different from day to day when not stored in a fixed position. The good news is that the actual variations of a mechanical watch will often cancel each other out. This means a mechanical watch will tend to be more accurate over a longer period than the single-day COSC measurement may imply.

[Tiyal]

+2 on a asian 21J.

[highoeyazmuhudee]

+2sec elabore grade 2836

another example of reason to not spend 12X the price on a gen rolex movement.

[TeeJay]

I've got mine to +0.5 over 24 hours, but this has taken at least 24 hours of constant observation and correction, which, without proper timing equipment, can get frustrating