Explore More Articles
Beverly Hills
Schaffhausen and the World's Most Famous Zip Code 90210

As the first IWC boutique to open its doors in the United States, IWC Schaffhausen has been serving American watch aficionados since 2008. Read Article

Ingenieur 2013 Collection
Discover the new Ingenieur Collection

Learn more about the new Ingenieur timepieces from IWC Creative Director, Christian Knoop. Read Article

IWC's SIHH Booth 2013
Behind-the-Scenes at IWC's SIHH 2013 Booth

Take a behind-the-scenes look at IWC’s SIHH 2013 booth, the year of the Ingenieur watches. Read Article

IWC Opens in Las Vegas’ Wynn Encore Resort

After conquering New York and Miami, where does one go next? Never one to shy away from adventure, IWC has set its eyes out west, to a city arguably like no other in the world: Las Vegas. Read Article

IWC Opens in South Coast Plaza

Home to some of the most luxurious beach resorts in the world, Orange County, California, is also the location of South Coast Plaza in Costa Mesa, which represents the highest concentration of design fashion retail in the United States. Read Article

Flying High

It's no flight of fancy that IWC Pilot’s Watches have become icons. Exceedingly popular, they represent IWC values, defining the entire genre of pilot’s watches within the Swiss watch industry. Read Article

IWC breathes life into its stories

For the first time ever, IWC turns the worlds in which its products are rooted into the subject of an international image campaign Read Article

Love of his life

Hansjörg Kittlas about the love of his life - the minute repeater Read Article

Experiences

Six hours for all eternity

Inside IWC

Text — Medard Meier Photos — David Willen Date — 1 October, 2009

Share:
Experience - Perpetual Calendar - Article Hero Vertical

Any watchmaker who is allowed to work at one of the benches in the “Complications” department at IWC in Schaffhausen has definitely made it to the top of his trade. Because this is where the company makes the intricate mechanisms on which its fame rests. Leading the way is the perpetual calendar, invented in 1985 by Kurt Klaus, which goes from one success to the next. The displays for the weekday, month and year, not to mention moon phase, are ingeniously simple and will go doing their job for centuries without any external interference. All the owner – or more precisely, owners, because there are likely to be several – has to do is look after it and have it regularly serviced.

At IWC, eternity, so to speak, is all in the hands of Patricia May, 25. She’s been making the “Perpetual”, as she and her colleagues in the workshops call it, for six years. But one thing at a time. She first assembles the calendar module, which consists of 30 minuscule wheels, arbours and screws, together with three discs, each with a circle of numerals, that display all the combinations required by the calendar. When finished, the complication is just 2 millimetres high and has a diameter of 30 millimetres in the Da Vinci and 37.8 millimetres in the Portuguese. Next, the mechanism is screwed firmly into position on the movement and, finally, equipped with the moon disc and century slide, which, as its name suggests, only moves once every 100 years.

After about six hours, the display is up for the big test. “Will it switch, or won’t it?” The atmosphere is one of tense concentration. The numerals slot into place, and a look of relieved satisfaction crosses Patricia May’s face. Things don’t always go quite so smoothly: a wheel can easily jam, or the discs may not run absolutely true. If this happens, she has to readjust the mechanism until a quick run-through of the calendar functions indicates that it is now ready to do its job of displaying the correct date for all eternity.

For the young watchmaker, this is always a special moment. She first hit upon the idea of her vocation in a newspaper article. “I had no great expectations when I came for the taster,” she recalls. But it all worked out, and shortly afterwards she embarked on a four-year apprenticeship. Since then, watchmaking has won a place in her heart. Filing, grinding, chamfering, polishing and adjusting parts until they fit smoothly together is all part of her day’s work, which starts at 6.30 in the morning and ends at 4.

“I really love working with delicate things,” she says, and you take her at her word when you see her working on a part: her long, slender, elegant fingers seem made for the job. Which is why it is all the more surprising to learn that she has another passion that involves radically different qualities: climbing, on indoor walls and outdoors. For Patricia May, alpine climbing is all about guts and adrenalin: the perfect balance to watchmaking, which calls for peace, quiet and unwavering concentration. Even here, though, she could well imagine taking on a major new challenge: in this case, the Aquatimer Deep Two.

When finished, the complication is just 2 millimetres high and has a diameter of 30 millimetres in the Da Vinci

Explore More Articles
Beverly Hills
Schaffhausen and the World's Most Famous Zip Code 90210

As the first IWC boutique to open its doors in the United States, IWC Schaffhausen has been serving American watch aficionados since 2008. Read Article

Ingenieur 2013 Collection
Discover the new Ingenieur Collection

Learn more about the new Ingenieur timepieces from IWC Creative Director, Christian Knoop. Read Article

IWC's SIHH Booth 2013
Behind-the-Scenes at IWC's SIHH 2013 Booth

Take a behind-the-scenes look at IWC’s SIHH 2013 booth, the year of the Ingenieur watches. Read Article

IWC Opens in Las Vegas’ Wynn Encore Resort

After conquering New York and Miami, where does one go next? Never one to shy away from adventure, IWC has set its eyes out west, to a city arguably like no other in the world: Las Vegas. Read Article

IWC Opens in South Coast Plaza

Home to some of the most luxurious beach resorts in the world, Orange County, California, is also the location of South Coast Plaza in Costa Mesa, which represents the highest concentration of design fashion retail in the United States. Read Article

Flying High

It's no flight of fancy that IWC Pilot’s Watches have become icons. Exceedingly popular, they represent IWC values, defining the entire genre of pilot’s watches within the Swiss watch industry. Read Article

IWC breathes life into its stories

For the first time ever, IWC turns the worlds in which its products are rooted into the subject of an international image campaign Read Article

Love of his life

Hansjörg Kittlas about the love of his life - the minute repeater Read Article