Arnold & Son - DBG EQUATION GMT
Luc Virginius / Chronopassion
Arnold & Son - DBG EQUATION GMT

DBG EQUATION GMT

Arnold & Son
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26'100 €

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See other pictures Luc Virginius / Chronopassion

DBG EQUATION GMT

A masterpiece of perfect symmetry, the Instrument DBG Equation GMT features two separate time displays, each driven by its own barrel and gear train with its own escapement and balance. This highly unusual technical specification permits the two displays to be set independently of each other. Although it is a standard feature of watches displaying two or more time zones for the hour hands to be set to different times, being able to set the minute hand as well opens up other possibilities. It means, for instance, that the display can be set to show the precise time in zones that differ from Greenwich Mean Time by a fraction of an hour, such as a quarter or a half. In addition, a subdial at 12 o'clock shows the equation of the two time zones on a 24-hour basis. This enables the wearer to see the time difference between the two zones and also to ascertain whether it is day or night in the second zone. Both time zones share a common permanent seconds in the shape of the long slender hand emanating from the centre of the dial, which is a hallmark feature of the new Arnold & Son's Instrument collection.

Watches with a double barrel and escapement have a tradition going back many years in horology but are rarely found today. The principle is ideally suited to the Arnold & Son's instrument line because a separate barrel/gear train and balance/escapement enable the watch to house different complications without having one influencing the accuracy of the other by draining its energy. It is therefore perfectly adapted to be used for a second time zone, as in the DBG Equation GMT. Another practical advantage of having a double barrel/gear train and a double balance/escapement is the fact that it allows to house two completely different technical solutions and characteristics for each complication in one and the same movement. The Instrument DBS, for example, which is also being unveiled in 2012, not only shows mean solar time but also boasts a separate display for sidereal, or star, time using a specific gear train with a different/higher rotation speed than the one of the mean solar time indication.

No less impressive than the watch's technical features is its aesthetic appeal, and in particular its symmetry, which is largely determined by the positioning of the elements in the dual movement. The view from the back reveals a pleasingly balanced arrangement of bridges, barrels and gear trains. From the front, and highlighted against a backdrop of Côtes de Genève stripes on the lower half of the dial, are two triple-armed balances secured in position by the two balance cocks, which face one another and fuse together to create a circle. Completing the overall sense of balance are the two crowns, one in the conventional position at 3 o'clock, the other at 9. The two mainsprings are both wound using the crown on the right. However, the time in each of the two selected time zones is set using its own crown, which ensures that neither of the zones is moved or changed advertently. The time zone on the left is set using the crown at 9 o'clock and the time zone on the right by the crown at 3 o'clock.

 

Technical specifications

Ref. 1DGAS.S01A.C121S

 

 

FUNCTIONS : local hours, minutes and seconds, GMT hours and minutes, local time 24 h indicator, GMT 24 h indicator

CALIBER : A&S1209

Exclusive Arnold & Son mechanical movement, hand-wound, 42 jewels, diameter 35 mm, thickness 3.9 mm, power reserve 40 h, 21'600 vibrations /h. Movement decoration: Nickel-silver movement, rhodium treated with Haute Horlogerie finishing: manually chamfered bridges and polished edges, fine circular graining and 'Côtes de Genève', blued screws.

CASE : Stainless Steel, diameter 44mm, cambered sapphire with anti-reflective coating on both sides, case back see-through sapphire

DIAL : light-grey and silvery opaline dial

STRAP : Hand-stitched black alligator leather

WATER RESISTANCE : 30 m

Who's who

Preserving a proud heritage

Arnold & Son belongs to a select group of watchmaking companies in Switzerland entitled to call themselves a manufacture, a French term reserved exclusively for watch manufacturers who develop and produce their own movements in-house. The brand's prowess in the development and production of in-house movements is reflected by an impressive collection of Arnold & Son calibres with a complete range of sophisticated complications. Some measure of its achievement can be found in the fact that at least two new movements have been launched each year: an exceptional achievement that puts Arnold & Son on the same level as some of the most dynamic manufactures in the watch industry.

 

Every Arnold & Son movement has its own story to tell and reflects the brand's heritage. They range from the minuscule repeating watch presented to George III that cemented the founder's reputation, to the precise marine chronometers that made travel at sea so much less hazardous and put the British Empire on course to expansion.

 

Unlike other watch manufacturers, who often use the same calibre for different models, Arnold & Son develops a new movement for every single model. Today, the brand maintains a product philosophy established well over 200 years ago, combining traditional, hand-finished craftsmanship with state-of-the-art technology. CNC machinery delivers the microscopic precision needed to guarantee the accuracy and quality that were always one of John Arnold's prime concerns.

Arnold & Son's development and production facilities are located in La Chaux-de-Fonds, at the heart of the Swiss watchmaking industry, for the simple reason that this is the ideal place to ensure that Arnold's heritage lives on. It is home to the industry's most talented and experienced watchmakers and engineers, individuals whose pride and raison d'être lie in the production of high-quality precision watches that are among the very best available.

 
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