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The Encyclopedia of Horology

Component record · Train

Coupling Clutch

Partially verified

Assembly of wheels

What it does

Transmits power to the chronograph seconds wheel

How it works

Evolution

Lateral or vertical

Known variations

    Identification for collectors

      Common failure modes

      • Depth of mesh

      Diagram

      driving wheelcoupling clutchcolumn wheelpusher
      Schematic: chronograph control. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

      Sources & references

      1. de Carle, D., Practical Watch Repairing
      2. de Carle, D., Watch and Clock Encyclopedia
      3. Daniels, G., Watchmaking

      Where sources disagree, the disagreement is stated rather than resolved silently.