![]() For best results, take your phone and your watch to a quiet room and remove the back cover. because of this it is sensitive to the background noise in your room, including other clock or watches. WatchTuner uses your phone’s microphone to listen to the escapement. ![]() It is moderately priced, performs auto beat detection, and pretty much just works. I have had good luck with the app WatchTuner Timegrapher, which is available for iPhones from the Apple App Store. Dedicated timing machines can be very expensive, however there are Smartphone apps that are very effective and cost only a few dollars. To get a more immediate answer, you can use a watch timing machine or computer or mobile phone software. You can observe the rate of your watch over hours or days to determine how accurately it is keeping time, but that takes a very long time. Older pocket watches (mostly European watches before 1870 or so) operated at 14,400bph, and modern watches typically operate at 28,800bph or even 36,000bph. The vast majority of pocket watches operate at 18,000bph, which translates to 5 “ticks” per second. Watch rates are given in Beats Per Hour, or bph.
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