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The Encyclopedia of Horology

Movement record · Switzerland

Venus 175

Partially verified

Column-wheel manual chronograph

Technical specifications

Diameter
29.0 mm
Height
Not recorded in the sources consulted
Jewels
17
Frequency
18,000 vph (2.5 Hz)
Power reserve
Approx. 40 hours
Winding
Manual, stem wind
Setting
Pendant set
Escapement
Swiss lever
Balance
Monometallic balance
Complications
Chronograph with minute and hour registers

Identification features

  • Column wheel with characteristic Venus bridge shapes
  • Calibre number stamped on the movement

Known variants

  • Two-register Venus 178
  • Later derivatives produced abroad after tooling transfer

Servicing notes

Cleaning, lubrication, mainspring and pivot work belong with a qualified watchmaker working from calibre-specific documentation. Conserve original parts: replacing a worn component with a modern substitute changes the object, and refinishing plates or dials destroys evidence.

General guidance only. Antique movements should be serviced by a qualified watchmaker.

Historical significance

A well-regarded mid-century chronograph ébauche whose tooling later passed outside Switzerland, an example of how calibre lineages cross borders.

Diagram

top plate or bridgespillar platebalance and cockwheel train between the plates
Schematic: plate and bridge layout. 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. Period trade material catalogues and calibre reference compilations (edition-dependent)
  3. Published manufacturer technical documentation where available

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