how do you test your Omega's accuracy?

[kobefans]

so i just got my new SMP bond watch,

I understand it is a chronometer, which means it falls in the standard of COSC

I am just wondering what would be a easy way for myself to test the accuracy of my watch?

and i read somewhere on the forum you can order a COSC certificate or some sort of paper that will tell you information about your watch. How can I get that? does it cost money?

Thanks in advance !

[Andad]

I am just wondering what would be a easy way for myself to test the accuracy of my watch?

When you start to arrive late for meetings........you will know.

[kobefans]

Originally Posted by directioneng

I am just wondering what would be a easy way for myself to test the accuracy of my watch?

When you start to arrive late for meetings........you will know.

haha you are funny!

[rob541]

But then again, anything that ends in GOV has got to be screwed up to start. Who knows if that even accurate.


Rob

[Andad]

K,

Set your Omega here.

http://www.timeticker.com/

Wear it for 30 days.

Check it again.

divide the seconds fast or slow by 30 days.

If it is within -4 seconds to +6 seconds then you are good.

If you are outside of this then it is not to COSC standards.

Post the results here.

[FeelingTheBlues]

Originally Posted by directioneng

K,

Set your Omega here.

http://www.timeticker.com/

Wear it for 30 days.

Check it again.

divide the seconds fast or slow by 30 days.

If it is within -4 seconds to +6 seconds then you are good.

If you are outside of this then it is not to COSC standards.

Post the results here.

Either that or you buy a quartz watch!

[Andad]

The accuracy of a 'quartz watch' is often overstated as the accuracy of a quartz watch is also based on quality as some are also partly mechanical.
Quartz accuracy IMO only looks good compared to poorly adjusted or inferior mechanical movements.
I have a few quartz watches the most accurate is a Longines VHP I bought new in 1984.
If I set the time on 10 of my quartz watches and check them after 30 days they are all over the place.

Here are a few Carl.

[kobefans]

Originally Posted by directioneng

K,

Set your Omega here.

http://www.timeticker.com/

Wear it for 30 days.

Check it again.

divide the seconds fast or slow by 30 days.

If it is within -4 seconds to +6 seconds then you are good.

If you are outside of this then it is not to COSC standards.

Post the results here.

thanks a lot , i will try this out !

[FeelingTheBlues]

Originally Posted by directioneng

The accuracy of a 'quartz watch' is often overstated as the accuracy of a quartz watch is also based on quality as some are also partly mechanical.
Quartz accuracy IMO only looks good compared to poorly adjusted or inferior mechanical movements.
I have a few quartz watches the most accurate is a Longines VHP I bought new in 1984.
If I set the time on 10 of my quartz watches and check them after 30 days they are all over the place.

Here are a few Carl.

I understand your point Eddie but I'd like to say that I set my quartz watches when I buy them but I never touch them after that. Perhaps this has something to do with the fact that they're more recent but even with their mechanical parts I never had to worry about accuracy!

By the way, those two Constellation of yours are truly amazing, is the two-tone chronograph made of rose gold or yellow?

(Sorry for that little high jack to the OP!)

[dieseldragon]

you can set your watch to the time on this forum, it's as accurate as it gets, then check watch against forum time after 7 days or whatever period you choose.

I don't think you can order a chronometre certificate, it should have come with the watch.

[Andad]

Originally Posted by dieseldragon

you can set your watch to the time on this forum, it's as accurate as it gets, then check watch against forum time after 7 days or whatever period you choose.



I don't think you can order a chronometre certificate, it should have come with the watch.

Ian,

The Forum time on your computer is your computer's time clock.

The accuracy is dependant on which time site you sync to and how often you sync. My computer is synced twice daily with time.windows.com and the accuracy can be a long way off in 12 hours.

[Andad]

Originally Posted by FeelingTheBlues

I understand your point Eddie but I'd like to say that I set my quartz watches when I buy them but I never touch them after that. Perhaps this has something to do with the fact that they're more recent but even with their mechanical parts I never had to worry about accuracy!

By the way, those two Constellation of yours are truly amazing, is the two-tone chronograph made of rose gold or yellow?

(Sorry for that little high jack to the OP!)

18k yellow gold full bar Carl.

IMO a rare model as I have not seen another or found the same model on on the web.

Keeps good time.......for a Q.....Quar.....Quartz watch.

[jmsrolls]

COSC certificates are available from Omega.

Contact aftersales@omega.ch.

Fr. John†

[dieseldragon]

Originally Posted by directioneng

Ian,

The Forum time on your computer is your computer's time clock.

The accuracy is dependant on which time site you sync to and how often you sync. My computer is synced twice daily with time.windows.com and the accuracy can be a long way off in 12 hours.

A forum thread a while back said that the time on the forum was from some atomic clock somewhere, maybe I mis-read it...

[doc_colton]

I think the tachymetre on my Speedmaster is running 8 miles an hour slow.

[kobefans]

Originally Posted by directioneng

K,

Set your Omega here.

http://www.timeticker.com/

Wear it for 30 days.

Check it again.

divide the seconds fast or slow by 30 days.

If it is within -4 seconds to +6 seconds then you are good.

If you are outside of this then it is not to COSC standards.

Post the results here.

set my watch against the atomic clock

it appears that within 24 hours, it runs 5 seconds (give of take) faster

so that's good, bad or about average?

[FeelingTheBlues]

Originally Posted by kobefans

set my watch against the atomic clock

it appears that within 24 hours, it runs 5 seconds (give of take) faster

so that's good, bad or about average?

The COSC specs being -4/+6 a day, this is a good rate! However, as Eddie said, I would probably do the test a bit longer before I come to conclusions. Going 5 seconds a day may seem very bad but bare in mind that everyday the watch will gain or lose time so after a week or so it may not even seem like it's out of time (or, if it's in a bad shape, perhaps 5 seconds is at its best but I don't wish it to you)!

That's just my two cents, either way your SMP seems fine!

[kobefans]

Originally Posted by FeelingTheBlues

The COSC specs being -4/+6 a day, this is a good rate! However, as Eddie said, I would probably do the test a bit longer before I come to conclusions. Going 5 seconds a day may seem very bad but bare in mind that everyday the watch will gain or lose time so after a week or so it may not even seem like it's out of time (or, if it's in a bad shape, perhaps 5 seconds is at its best but I don't wish it to you)!

That's just my two cents, either way your SMP seems fine!

wow thats so informative.

so a watch like mine will not only run faster, which it did, it will also lose time?

care to give me a lecture why it does that? Just curious

And for sure I will at least test it against the atomic watch for an entire week to get a better understanding of the watch's accuracy.

Thanks !

[FeelingTheBlues]

Originally Posted by kobefans

wow thats so informative.

so a watch like mine will not only run faster, which it did, it will also lose time?

care to give me a lecture why it does that? Just curious

And for sure I will at least test it against the atomic watch for an entire week to get a better understanding of the watch's accuracy.

Thanks !

Well given the fact I own quartz watches I may not be the very best to help you with that. However, I may just tell you this:

- Mechanical watches work with a multitude of small parts running together to keep the time. Since it works physically rather than electronically, the accuracy is less controlled and it will happen that, sometimes, the watch will gain or lose a couple of seconds over a period of time.

- Given that "lack" of accuracy, the Contrôle Officiel Suisse des Chronomètres sets some specifications that high-end watch brands will respect in order to sell what is considered to be greatly built and properly working timepieces. Those specifications are, as stated, -4/+6 seconds a day.

- Pretty much the answer to your question: There are some factors that make a watch lose or gain seconds. The position, shape of the movement and the oil put on the gears and daily movements of the watch itself may influence its accuracy and, therefore, gaining or losing a certain amount of seconds in one day cannot really say if your watch is accurate or not, perhaps something happened in one day that made this happened.

I hope I answered your question a little bit or, at the very least, I gave you some useful information. Of course, I'm not an expert and some people around here have a lot more knowledge than I do (those people are free to correct me if I'm wrong, as always) but I thought my opinion and what I know on the subject might help a bit!

[azguy]

I use this site www.time.gov.com-

You need to do some research into mechanical watches

[FeelingTheBlues]

Originally Posted by azguy

I use this site www.time.gov.com-

You need to do some research into mechanical watches

Are you talking to me or the OP? I hope I didn't give bad information.