5 euro Timegrapher that works perfect.

Homemade Timegrapher that does the job without breaking the bank.
the combination of a smartphone app and a homebuilt microphone is almost as good as an expensive device from the factory. This can be the perfect tool to regulate your watch with tools you might have already in your home. Regulating a watch that runs to slow or to fast is impossible without a device like this. All you need is an microphone, a smartphone and the clock tuner app.

For the record, I have nothing to do with this app and just payed for it.. so don't ask me about it I can't help you with it as long they not endorse the channel

Видео 5 euro Timegrapher that works perfect. канала Dutchwatchdude