CREATIVE TIME
A daily look at time
RUO’ZEN

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Accuracy Lab

Compare your mechanical watch with a reliable time source, save deviations and follow changes in its rate.

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Add a watch

There are no models in My Collection yet. You can enter a watch manually. My Collection ↗

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Compare the watch with a reliable time source and record the difference. Use the same reference each time. The average rate is calculated from the change in deviation between the first and last reading in the current series.

This is an observation diary, not a timegrapher or an accuracy certificate. Setting the hands, stopping the watch or winding it again changes the starting point—mark a new series.