Measuring accuracy

[Perfectwatches]

Hi guys newbie here. I use toolwatch.io to measure the accuracy of my watch. Any of you guys use it?

Also, is this a reliable basis for regulating watches?

According to the site, my SNZG15 is +15 sec per day.

That sounds about right though since it does drift a minute forward every 3-4 days.

Hoping for some inputs. Would be wonderful too if you could share your means of measurement.

[JeepWH]

I use a stopwatch to time it periodically in 5 positions.

I do use toolwatch.io too.

[gchee]

I just manually compare it to us atomic clock over a period of 24 hours

[spacewalker]

I also use stopwatch to compare the timing withing 24 hours. Even it is not a correct way to measure the accuracy , at least we will know if there is something wrong with the watch.

The correct way to measure accuracy is to use Timegrapher. The machine that can detect the accuracy +-, lift angle and beat error.
This explanation might help.

http://www.wristtimes.com/blog-1/2014/6/24/how-to-use-a-timegrapher

[meoramri]

Thanks for highlighting the website. Simple to use and the best thing is that it keep track of all the tests.

May not be accurate as a Timegrapher but sufficient for avid collectors.


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[Cocas]

There are few watch brands are very sincere and very truthful to customer and themselves.

Armand Nicolet is one of them!

It issues numbered technical control certificate with all accuracy reading at different position and the humidity level that the test conducted.

But actually I've not yet seen this from my known premium brands.

[mongourou]

Bremont provides the COSC certificate with all measurement for the exact watch tested. Does not mean that it will keep up running within COSC limits though.

I was mental at the beginning of owning expensive watches about accuracy testing each one several times a week. I must say that several years later I might measure the accuracy using my phone maybe every 6 months (same thing with keeping them running with watch winders).


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[Timeless]

Compare with digital watch or phone will do.

[psychokandy]

i use toolwatch.io as well

[Cocas]

AN is using "controle de la marche des montres tramelan". Not COSC.

[Cocas]

 

OMG, my watch "controle de la marche des montres tramelan" cert is so much inferior than COSC.

Its accuracy tolerance is +/- 20 seconds per day.

I need to get my watch accuracy adjusted. +20 seconds per day is just unacceptable to me.

[Danielo]

Accuracy for mechanical watches should be taken with a pinch of salt.

Does it really matter if a watch run off by 15 seconds a day? Seriously?

If you wanted an accurate watch, buy a digital.

[Cocas]

Accuracy for mechanical watches should be taken with a pinch of salt.

Does it really matter if a watch run off by 15 seconds a day? Seriously?

If you wanted an accurate watch, buy a digital.

Mechanical watch accuracy is very subjective. To me, I am fine with +/-8seconds per day. Because I seldom wearing my watch more than 1day.

[gchee]

Accuracy for mechanical watches should be taken with a pinch of salt.

Does it really matter if a watch run off by 15 seconds a day? Seriously?

If you wanted an accurate watch, buy a digital.

Mechanical watch accuracy is very subjective. To me, I am fine with +/-8seconds per day. Because I seldom wearing my watch more than 1day.

It matters to me. When you paid big bucks of your hard earned cash for something that demands precision engineering and at the same time aesthetically pleasing. You'll want it to be accurate

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[mongourou]

Precision engineering is relative. 15seconds per day is a deviation of 0.017361%. But I am with you on this IF the watch is certified by a specific organism (COSC, Metas...).


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[meoramri]

Brands that focuses on styling and mechanical accuracy will have strong following. This is why Rolex is at one end and Fossil (and any other fashion brand) is on another.


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[gchee]

Brands that focuses on styling and mechanical accuracy will have strong following. This is why Rolex is at one end and Fossil (and any other fashion brand) is on another.


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On the contrary. Fossil (quartz movement) is more accurate than Rolex.

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[mongourou]

Fossil Group produces around 30 million watches per year, Rolex less than 1 million. So I believe strong following is at the lower end of the spectrum.


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[meoramri]

Brands that focuses on styling and mechanical accuracy will have strong following. This is why Rolex is at one end and Fossil (and any other fashion brand) is on another.


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On the contrary. Fossil (quartz movement) is more accurate than Rolex.

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Exactly my point. You nailed it perfectly.


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[Equinox]

I have one recommended app for monitoring watch accuracy. Very very good app for this purpose. As it provides analysis for various position or condition. I got it from Google play store.  It's called watchcheck.

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[Frogman]

I have one recommended app for monitoring watch accuracy. Very very good app for this purpose. As it provides analysis for various position or condition. I got it from Google play store.  It's called watchcheck.

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Cool app, good sharing.

[Equinox]

Just wanna share another in app  screenshot.

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