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Why would anyone tilt a tourbillon?

For Episode 3 of Masters of Chronometry, @wei_koh_revolution and @constant.kw trace inclined tourbillion, a horological idea that stretches back more than 165 years, from an almost forgotten American pocket watch to some of the most ambitious tourbillons being created today.

The story begins with Andrew Holden Potter, the Boston watchmaker who created the earliest known inclined-balance tourbillon, only for his achievement to be repeatedly confused with that of another American watchmaker, Albert Henry Potter.

Then came Walter Prendel. Working in Saxony in the late 1920s, he created an extraordinary six-minute tourbillon with progressively inclined escapement components and a balance set at 30 degrees.

From there, the story moves to @greubel.forsey Greubel Forsey, where inclination became a defining pursuit and, crucially, one that could be tested through chronometry. It continues through Éric Coudray, @hytwatches HYT, @jaegerlecoultre Jaeger-LeCoultre and @artyawatch ArtyA, each finding new ways to change the oscillator’s relationship with gravity.

The inclined tourbillon may look like mechanical theatre, but its roots lie in a very serious question about precision.

Masters of Chronometry Ep. 3, now on YouTube. Link in bio.

#MastersOfChronometry #Tourbillon #InclinedTourbillon #RevolutionWatch

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@patekphilippe’s Watch Art Grand Exhibition opens to the public in Milan today, and @wei_koh_revolution, @tellewellyn and @revoio got a first look inside.

A nine-metre-high recreation of Geneva’s Jet d’Eau greets visitors at the entrance. Beyond it are historic timepieces, a closer look at the manufacture’s movements and crafts, and 25 Rare Handcrafts creations inspired by Italy. The seven new limited editions are here too, led by the platinum Ref. 5978P-010.

The exhibition runs at CityOval until 18 October, with free admission upon registration.

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FIRST LOOK: The new Patek Philippe Ref. 5978P-010 Milano 2026 Limited Edition.

At @patekphilippe Patek Philippe’s Watch Art Grand Exhibition in Milan, @wei_koh_revolution gets his first hands-on look at one of the most significant watches created for the occasion: an instantaneous perpetual calendar chronograph that brings together two of the manufacture’s most sophisticated mechanisms in a single watch for the first time.

At midnight, the day, date and month indications arranged across the top of the dial jump simultaneously in just 30 milliseconds. The chronograph is equally exacting, with an instantaneous 30-minute counter that advances precisely as the central chronograph seconds hand completes each revolution.

Powering it all is the manually wound Calibre CH 29-535 PS QI, combining Patek Philippe’s celebrated lateral-clutch, column-wheel chronograph architecture with its instantaneous perpetual calendar mechanism.

The 42mm platinum case frames a navy-blue sunburst dial with a textured centre, red chronograph indications and calendar displays in Italian, created specifically for Milano 2026.

Limited to just 120 pieces, the Ref. 5978P-010 is the headline complication of Patek Philippe’s Milan Grand Exhibition.

Read more on RevolutionWatch.com (Link in bio)

#PatekPhilippe #PatekPhilippe5978P #5978P #RevolutionWatch

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