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Discover black polishing, the hand-finishing technique that creates flat, flawless mirror surfaces with a shine that looks black, used in fine watchmaking.

The Breguet XIV A2 at the Museu do Ar in Alverca: a link between watchmaking, aviation and instrumentation, and a symbol of precision and technical innovation.

A horological itinerary through Paris: museums, watch boutiques, flea markets and history — a city where time is measured with art and admiration.

The history of Comtoise clocks, also known as Morez or Morbier, and how the IPR restored the clock in the Salão Nobre of Sernancelhe Town Hall.

Remarkable shipwrecks and the watches recovered from their wrecks: from the Lady Elgin and the Titanic to the Aquidabã, the Pulaski and HMS Hermes.

Join us on a journey through the intricacies of time, from Einstein's Longines to Carlo Rovelli's The Order of Time, and ask what watches really measure.

Atomic clocks, from Lyons to Katori and from caesium to strontium: extreme precision that runs GPS, banking and science and redefined the second. Plus a quiz.

Musical pocket watches combine horological precision with the art of sound. Their history, mechanisms, great makers and a gold Benac a Besançon piece from 1810.

From the foliot to Huygens' hairspring: how the balance spring turned inertial regulators into harmonic oscillators and transformed the precision of timepieces.

From the Longines Nonius to the Edox Geoscope and the Hebdomas: watches discovered at past editions of Tempo Passado that have truly stood the test of time.

Hooke or Huygens? Discover one of the great duels in watchmaking history: who really invented the balance spring that turned the pocket watch into a precision instrument.

Discover the link between the pocket watch and hypnosis, the technique for accessing the unconscious, from Mesmer and Braid to the stage and the consulting room.