Witschi
The ProofMaster tests the water resistance of watches conveniently with a fully automatic closing and test sequence. With its high level of operating convenience, the ProofMaster is the ideal tightness testing device for the following areas: watch service centres, watch retailers, watchmaking and watchmaking laboratories.
![Video](http://img.youtube.com/vi/h__xgU9Hsp8/2.jpg)
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