On the Watchismo blog, Mitch celebrates the launch of the Urwerk King Cobra CC1, a remake of the original "jumping hour" watch, explaining why he's so fascinated with these remarkable, largely extinct timepieces.
Urwerk King Cobra CC1 Reintrepretation of 1958 Patek Philippe Cobra Prototype Linear Retrograde Cylinder Jumping Hour Watch
Time is usually - nearly always - displayed by a circular indication: one dial and two (or three) with the time displayed around a perpetual circle. However, this 360° representation of time goes against everything we learnt as we grew up drawing a straight line on a blank page and marking it Past, Present and Future. Why do we think of time as travelling in a straight line yet display it rotating around a circle? The answer is straightforward: mechanisms that continually rotate are much simpler to produce than those that trace a straight line then return to zero. In fact, the latter is so difficult that, until now, nobody has ever managed to develop a production wristwatch with true retrograde linear displays.