Even the smallest parts of a Swiss watch are made with incredible precision. They are often hard to measure and require very sharp and extremely precise micro tools.
UNION TOOL produces special tools with geometric tolerances that are less than 0.002 mm.
These tools are subject to 100% inspection and are certified. The exact diameter is indicated on the test certificate and the perfect geometry of the tools is proven. These tools provide valuable support for programming and pre-setting machines.