The Excalibur Bi-Retrograde Calendar by Roger Dubuis

This year, Roger Dubuis celebrates its 30th anniversary, and for the occasion, the company pays tribute to its co-founder’s favourite complication: the bi-retrograde display.

This function, previously featured in the Excalibur Grande Complication alongside a dozen other highly complex mechanisms, takes centre stage once again. The Maison has also introduced a less complicated, more classic edition to further honour the bi-retrograde display.

Also referred to as “the ecliptic counters” by the Maison a nod to their elliptical shape and distinctive role in indicating the months and date the design showcases a symmetrical dial layout. Enhanced by refined detailing, it pays homage to the Maison’s early creations from 1996.

Glossary

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Glossary
Main Spring Winder

Main Spring Winder

The main spring winder, also known as the mainspring winder or mainspring winder tool, is a tool used in watchmaking to wind and unwind the mainspring of a mechanical watch. It is an essential tool for professional watchmakers and watch repairers, enabling them to efficiently and accurately wind and unwind the mainspring, facilitating the maintenance and repair of mechanical watches.

The mainspring winder consists of a handle or clamp and a set of interchangeable tips or columns of various sizes to accommodate different watch movements. The tips are designed to fit the main barrel arbor of the mainspring and provide a secure grip for winding and unwinding the mainspring.

The use of the mainspring winder requires precision and skill in handling to ensure proper winding or unwinding of the mainspring. It is a delicate process that requires experience and expertise, as improper handling of the mainspring can lead to damage to the watch movement or even injury to the watchmaker.

The mainspring winder ensures proper winding for optimal power transmission and maintains the accuracy of time measurement in the watch.