Born from a need to re-create mixed drinks in perfect proportion, Bartendro uses food-grade tubing, pumps and custom-built electronics to pipe liquids out with a measurement accuracy of a milliliter.

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But geometry is even more important for the movement: a movement must be geometrically perfect, nothing superfluous, nothing that makes the movement look out of proportion, and it must have the perfect finish.

WSJ: Watch Making's Self-Taught Genius | Michael Clerizo on George Daniels