Andrew Hildreth

Settling the 300-Year Old Dispute – Who Invented the Balance Spring?

The irascible Robert Hooke and his long-lost notes.

Innovating and Inventing: The Greubel Forsey Différentiel d’Égalité Explained

Constant force revisited.

Grand Seiko Dives Deep with the Hi-Beat 600m Diver SBGH255G

Taking it from land to sea, past and present.

Ringing In the Changes – Explaining the Greubel Forsey Grande Sonnerie

The most complicated watch ever, from a maker of very complex watches.

The Genius Behind the Most Important English Watch of Modern Times

The George Daniels Space Traveller pocket watch.

Heavens Above! Explaining the Genius of the Vacheron Constantin Celestia Calibre 3600

The universe in miniature inside the most complicated Vacheron Constantin wristwatch.