Skip to content
The Encyclopedia of Horology

Component record · Dial & hands

Day Wheel

Partially verified

Printed disc

What it does

Displays day of week

How it works

Evolution

Printed in multiple languages

Known variations

    Identification for collectors

      Common failure modes

      • Paint chipping

      Diagram

      date ring, thirty-one positionsdate aperturedriving wheel and jumper
      Schematic: calendar work under the dial. 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.