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JEWELRY
BREGUET MARINE
Equation Marchante 5887
Delivery time: on demand
Ref. 5887PT/Y2/9WV
Breguet, Chronometer-maker to the French Royal Navy
Throughout his career, A.-L. Breguet demonstrated his
exceptional mastery of time measurement. Renowned throughout Europe,
he found an active admirer in King Louis XVIII who offers him
recognitions and honors.
In 1814, the king of France appoints him a member of the Bureau des Longitudes in Paris, a body dedicated to the advancement of the various branches of astronomy and their applications to geography, navigation and geodesy (calculating the shape and area of the earth to determine the exact position of geographical points).
As an extension of this distinction, the
king awarded Breguet the official title of "Chronometer-maker to
the French Royal Navy” in 1815.
True Solar time and Mean Solar time
Since antiquity, the sun has been used as the basis of
time. However, the visible motion of the sun – the True Solar time
– is irregular.
With the improvement of timekeeping
precision, True Solar time has been replaced by Mean Solar time,
whereby each day has the same duration of 24 hours. The latter can
have a discrepancy with True Solar time ranging from minus 16 minutes
to plus 14 minutes.
The Equation of Time
This complication shows the difference between mean
solar time (corresponding to civil or standard hours and minutes),
and true solar time (meaning the actual solar hours and
minutes).
Precious for astronomers and navigators, the
equation of time piqued the interest of all great watchmakers of
A.-L. Breguet's time. Moreover, the most elaborate models came from
the Breguet workshops in Paris.
The running equation of time
Rare and fascinating, the running equation of time
displays civil time and true time simultaneously, with the help of
two distinctive minutes hands.
Description
Blue dial in gold, engine-turned. Individually numbered and signed Breguet. Hours chapter with Roman numerals and luminescent dots. Breguet facetted hands in 18k gold with luminescent material. Running solar hand with facetted golden sun. Days of the week in an aperture between 10 and 11 o’clock. Months and leap-year cycle in an aperture between 1 and 2 o’clock. Retrograde dates indication on an arc running from 9 to 3 o’clock. Power reserve in an aperture between 7 and 9 o’clock.
Self-winding movement with running equation of time, perpetual calendar, tourbillon and 80-hour power reserve, Cal. 581DPE. Numbered and signed Breguet. Small seconds and equation of time cam on the tourbillon axis. 16¾ lignes. 57 jewels. Silicon escapement wheel and inverted lateral lever with silicon pallets. Silicon balance spring. Balance frequency 4Hz. Adjusted in 6 positions.
Alligator leather strap with gold folding clasp.
Also available in 18k rose gold with dial in silvered gold and anthracite movement
Specifications
- Automatic mechanical
- Yes
- 80 hours
- Leather
- Platinum
- 43,8 mm
- Blue
- running equation of time, perpetual calendar (Days of the week in an aperture between 10 and 11 o’clock. Months and leap-year cycle in an aperture between 1 and 2 o’clock. Retrograde dates indication on an arc running from 9 to 3 o’clock), tourbillon
- 10 bar
Breguet Marine
Marine watches are based on the traditional Breguet values, while interpreting them in a contemporary way in order to create sporty timepieces. The Marine watches possess all the qualities laid down by A.-L. Breguet as chronometer maker to the French Navy.
BREGUET SERIES
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