Reading & Understanding Watch Timing Machine Results

[Ashton_Horologist]

I see a lot of people on watch forums these days have purchased a watch timing machine to be able to see how their mechanical watches are running. I have noticed that most of them don’t know how to accurately read those results to get a clear idea of what is going on. I have made this video to hopefully clear up some of that confusion and help you to understand exactly what the numbers mean.

Here is the link to the video:

https://ashtontracy.ca/2019/08/26/re...chine-results/

[aasubo]

Much appreciated, look forward to watching it tonight...and yes, I bought one of these little things without knowing too much about watchmaking in the first place ;-)))

BR
Torsten


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[SOG DIVER]

Excellent. The amplitude and timing analysis is first rate. Especially valuable
in reading watch condition before purchase or determining service need.

[watchmavan]

Oh, thank you very much. I've been using just a Frederick Constantine Watch Analytics as it's very portable and works via an iPhone app. Today my Lepsi Watch Scope is waiting for me at work so I'll look at the video before I use it.

I find some lift angle very hard to find out though, so you have a recommendation for some of the more modern calibres?


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[Ashton_Horologist]

Christian over at watchguy.co.uk has a very good resource:

https://watchguy.co.uk/cgi-bin/lift_angles

[Jostack]

Thanks for the video and explanation.

I find that on a timing machine, a watch may drift as much as 2spd over a longer period ~2hrs. It may go up and down over that period. With that said, is there a standard period of time in a position to let it ‘settle’, before taking the reading as a good number?

If simply averaging those readings of different positions is how the timing analysis is done, it makes sense that on wrist performance can be a good bit different. I would have expected heavier weighting given to certain positions over others.

The last regulation I performed I started with the intent to balance having positive and negative across dial up/dial down/crown up/crown down. Theory being to have an easy resting position to compensate for on wrist gain or loss.




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