Knowledge

Insight: The Geometric Efficiency of Escapements

Quantifying performance by measuring efficiency.

In-Depth: The Ingenuity of the Rolex Oyster Perpetual Sky-Dweller

Saros annual calendar and Ring Command system.

Visiting the Vacheron Constantin Manufacture

Science and art under one roof.

Insight: Governors of Minute Repeaters, Sonneries, and Other Striking Watches

An essential mechanism regulating pace.

Insight: Urban Jürgensen and the Royal Danish Academy of Sciences and Letters

A relationship that shaped Danish watchmaking.

Paradise Found: Exploring Van Cleef & Arpels’ Automatons

Extraordinary mechanical creations.

In-Depth: The MB&F LM Perpetual and Stephen McDonnell’s Innovation

A unique calendar explained.

Highlights: Complicated Pocket Watches at Phillips Hong Kong

The best of horology before wristwatches.

In-Depth: Patek Philippe Grand Complication with Double Split-Chronographs Ref. 767

An incredible, landmark pocket watch.

Explained: The Detent Escapement

An alternative and superior escapement.
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