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 Index  Timepiece Archive, Categories  Archive: Tools, Equipment (Timepieces, Jewelry)    Timepiece Market 
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Fig. 1

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Fig. 2

4013: Waterproof Tester Boley

Accessories: dust cap
Checked pressure: 8bar (~115psi), recently checked
Operating pressure: 6bar (~86psi)
Top aperture: 54mm diameter
Test procedure: The test cylinder is filled with water up the the red mark. While enhancing the preassure with the hand pump, the watch is hanging above the water. If the watch has a leak, in this time air will enter the case. If the watch is now plunged into the water (with still applied pressure) and the pressure is released through the valve on the cylinder cap, the probably entered air will escape again. With the rising bubbles it is not only noticable whether the case has a leak, but also where.
: no reasonable visual or technical flaws. Pump and valves recently cleaned and lubricated with silicone grease. This easy service should be repeated every 5 to 20 years depending on frequency of usage.

Tester of this sort are still made by Bergeon, with 3bar operating pressure for ca. EUR 700.00, and with 10bar for ca. EUR 1100.00. Pump and pressure gauge of the item offered here are designed for 8bar (~115psi) and this was recently checked, but the scale print indicates that the acrylic cylinder is on long term only designed for 6bar (~86psi).

Sold in Auction

Date 8-26-15

High bid EUR 150.00

Reserve EUR 150.00

Not for Sale!
The item presented here is not for sale. It was offered or sold as mentioned above a longer time ago. This archive is just a market overview and price guide, e.g. for evaluation of comparable items.

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