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Broken Cartier balance shaft and the new repaired one . Extremely small dimensions: pivot diameter=0.06mm ; entire length=1 mm (the scale is demonstrated by the size of a human hair)
A broken "crown" on a Patek Philippe automatic remontoir wheel. To repair we needed to make a cutter to make the new 9 teeth on the crown . The cutter's diameter is 3mm and the wheel's diameter is only 1mm.
Broken second recorder shaft of a Heuer chronograph and the new shaft.