Pressure testing a "Watchco" SM300

HappyJack · Oct 29, 2020

Impressive set up. I've had watches pressure dry tested - in a vacuum device of some sort. If the watch leaks the pressure in the chamber rises - and in a wet pot where the pressure was lowered to see if bubbles were produced. I've never seen this sort of set up, though.

Louie455 · Nov 7, 2020

Thanks for sharing - always wondered how a pressure test was conducted.

aleksejeremeev · Dec 21, 2020

The Preciso 47 by Lititz Precision Products is a companion product to the Diver 125. After pressure testing, the watch is heated to precisely 47 C. A drop of room temperature water is placed on the crystal. If no moisture is noted on the inside of the crystal, the watch is deemed not to have leaked. The Preciso is also perfect for drying watches and bracelets after cleaning.