Glossary of watchmaking

Onyx

Onyx

A black agate that is often found as watch dials.

Terms with the same letter

Observatory chronometer Official rating certificate Oignon (watch) Oil sink Oiling Onyx Opale Opaque Organic Orient Ornamental gems Oscillating pinion Oscillating weight (Rotor) Oscillation Oscillator Oval

C C

Describes a number of identical step-cut stones with the same, usually square, shape which will be closely set in adjacent rows.

A minute scale on a dial that resembles a railway track.