The W* House / Study

'Calendrier Ring' calendar

Sebastian Bergne / Atelier d'exercices

£49

Perpetual calenders are tricky things to design in part because you have to incorporate disparate elements and various date combinations in a cohesive whole and in a way that doesn't require a degree in advanced maths to read. Resembling a deconstructed astrolab, London-based designer Sebastian Bergne's 'Calendrier Ring' achieves the goal most admirably with just three interlocking circles. Dates are marked simply by lining up the relevant circle to a central rod that acts as both a hinge and date marker. In the Calendrier, Bergne, whose works have shown at the Pompidou and the Museum of Modern Art has created a calendar that will never date.

www.atelierdexercices.com