[novacatz]

So I am a bit of a perfectionist - and I noticed that my GMT Master II each week gains about 12 seconds (wearing about 2 days a week and otherwise in the winder)

I know this is in spec but bought it off to the rolex centre just to have a look see - and they tested it and they were convinced that the watch was as good as it was going to get and if I really wanted I could do the full timing check (which would take a week) but advised against it)

The person gave me a slip from the machine as attached... any person in the know that can help interpret all the numbers?

 

[novacatz]

Your data looks great. You see results by watch position when measurement was taken. Time error, beat error and amplitude. Please do not touch your watch. This is as good as it gets, particularly for a rep.

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Can you explain how to read it? The icon on the lst is watch position? and then the digits like 006/001 is beat error. That means 006 per second? What would amplitude mean?

From what you say, data should be intepreted as great but then watch definitely off each week...

 

[novacatz]

Hi Gaijin,

Thanks for the detailed reply above - definitely find it useful and thinking how I can place my watch so can get average of 0 gain a week (thinking 2 - 3 days out of the winder per week. just need to space it around the power reserve).

A few things I want to understand more:

1.Beat Amplitude - you mentioned this measures the swing of the movement and is a sign of wear/tear/friction - can you let me know what is the range of 'good' 'concerning' and 'bad' etc
2. You mention the measurements were at a lift angle of 52 degs. - what is a lift angle?
3. (not related to my watch) Are all the measurements above applicable to any mechanical watch? So in theory if I could put a non-rolex mechanical in the machine I should get some interesting comparative measurements?

Thanks for all your insights in advance. Definitely very interesting stuff.

 

[novacatz]

Hmmm balance wheel / pallet fork / escape wheel. Too much jargon! So I guess this is something that is dictated by the design of the watch right or is this something the timing machine finds out

What is the cost of a timing machine ? Is there simple amatuer models available; just something to whet my curiosity in this field

 

[novacatz]

Newbienoob: no charge but my watch is in warrantary period but I did say I wanted to check out regulation in case it needed a pick me up.

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[novacatz]

About 20 mins

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