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The Encyclopedia of Horology

Complication · Timing

1/1000th Second Chronograph

Partially verified

A mechanical chronograph capable of 1/1000th second resolution.

Definition

A mechanical chronograph capable of 1/1000th second resolution.

Historical origin

The pinnacle of mechanical timing precision.

How it works

Uses an ultra-high-frequency oscillator or a complex differential system to divide the seconds further.

Often features multiple high-speed registers.

Pocket watch context

None.

Wristwatch context

Exceedingly rare; achieved by TAG Heuer (Mikrotimer/Mikrogirder).

Identification

  • Multiple fast-spinning hands
  • Frequency far beyond a typical heartbeat sound

Servicing notes

More of a technical demonstration than a practical tool; requires extreme maintenance.

General guidance only. Complicated mechanisms should be assessed and serviced by a qualified watchmaker or clockmaker specialist, not adjusted at home.

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., Watch and Clock Encyclopedia
  2. Britten, F. J., Old Clocks and Watches and Their Makers
  3. Horological Journal (British Horological Institute), technical articles

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