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　　The tolerance required for the finished sapphire Richard Mille case is very strict, within 10 microns.

　　This accuracy is driven by the special hardness and stiffness of the material in the assembly process.

　　After the initial rough cutting, each sapphire part is carefully processed and inspected like a high-quality optical lens.

　　Coordinate measuring machine (CMM) ensures accurate geometry by measuring hundreds of points on the surface, while manual inspection through microscope ensures that the final product meets the brand’s most stringent standards.

　　Uncompromising perfection.