America’s luxury watch show, WatchTime New York, is less than two weeks away as we continue to spotlight some of the most important timepieces that guests will discover there. Breguet’s Marine Équation Marchante 5887, which stole the show for many at this year’s Baselworld, will be among these timepieces. Here is what you should know about it.
The Breguet Marine Équation Marchante 5887 is unique in that it displays the running equation of time at a glance using a ?running? (marchante) central hand on the dial rather than on a subdial that shows the minutes to be added or subtracted to the current civil time. It even displays the cam that controls the equation-of-time function ? alongside a tourbillon and a perpetual calendar. It celebrates Abraham-Louis Breguet?s appointment in 1814 as a member of the Bureau des longitudes in Paris, a group of experts who measured the earth?s physical properties. As the official marine chronometer maker to the French Royal Navy, Breguet was a key member of the group. Breguet Marine Équation Marchante 5887
The equation of time is essentially the addition of a sundial to the modern wristwatch. It measures time according to the current position of the sun, by which the length of a day can vary by -16 to +14 minutes compared to average or civil time. The difference is called the equation of time. For practical reasons, man has divided each year into 365-and-a-quarter days, each day into 24 hours, and the hours into 60 ...