LUME
An independent watch journal Watches. Up close.
EST. MMXXVI LUME Local time

Lume Workshop / Interactive model

The column wheel in motion

Start the chronograph and watch a single wheel coordinate its levers in one precise sequence.

An original educational illustration, not a complete simulation of a particular calibre.

How does a single push coordinate several levers?

What to observe

Start and stop a cycle. Watch when a lever rests on a column and when it drops into the gap between columns.

Model limitations

The control mechanism alone determines neither timekeeping accuracy nor the type of chronograph clutch.

Understand how it works

The column wheel: how a chronograph decides to start ↗

Find the detailed explanation, technical background and sources in the accompanying article.

More models in the Workshop ↗

Share preview image: Own illustration

Search the journal

Take a closer look.