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Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
TOP
Doxa GRANDE METRE BLUE PLANET LIMITED EDITION 800PCS WORLD
฿114,248
Free shipping
Seller
Przedsiębiorstwo Handlowe Usługowe
172
PL
Rolex Datejust Pearlmaster
TOP
Rolex Datejust Pearlmaster
฿801,083
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Breguet Secret de la Reine
TOP
Breguet Secret de la Reine
฿1,839,648
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex Lady-Datejust
TOP
Rolex Lady-Datejust
฿534,501
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
TOP
Rolex GMT-Master II 116759SARU june 2020 Rolex warranty
฿2,604,952
Seller
MMC RIVIERA
6
MC
Rolex OYSTER PERPETUAL CHRONOMETER 18K GOLD HONEYCOMB WABENBLATT
TOP
Rolex OYSTER PERPETUAL CHRONOMETER 18K GOLD HONEYCOMB WABENBLATT
฿188,387
Seller
Timeless Watches GmbH
271
DE
Rolex Datejust Pearlmaster
TOP
Rolex Datejust Pearlmaster
฿754,256
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Omega Seamaster Planet Ocean CO-AXIAL 45.5 MM
Omega Seamaster Planet Ocean CO-AXIAL 45.5 MM
฿132,000
Seller
Private Seller
TH
Omega Seamaster Aqua Terra 150M Master Co-Axial  | 41MM
TOP
Omega Seamaster Aqua Terra 150M Master Co-Axial | 41MM
฿156,033
Seller
Juwelier van Willegen
64
NL
Rado 56-H Chronometre, 1st Version, Very Rare
TOP
Rado 56-H Chronometre, 1st Version, Very Rare
฿259,223
Seller
Plus Ultra AG
5
CH
Rolex Oyster Perpetual Caramel Dial Yellow Gold - 67488
TOP
Rolex Oyster Perpetual Caramel Dial Yellow Gold - 67488
฿194,428
Free shipping
Seller
Pawndeluxe
229
NL
TAG Heuer Grand Carrera Caribre6
TAG Heuer Grand Carrera Caribre6
฿92,963
Seller
World Wide Watch Shop
TH
Breitling CHRONOMAT 44 GMT AUTOMATIC AB042011
TOP
Breitling CHRONOMAT 44 GMT AUTOMATIC AB042011
฿216,324
Free shipping
Seller
RIVIERAWATCH
103
FR
Rolex GMT-Master II 116758SARU with 2 years warranty
TOP
Rolex GMT-Master II 116758SARU with 2 years warranty
฿2,604,952
Seller
MMC RIVIERA
6
MC
Sinn 103 St Sa RB Classic Watch Sondermodell
TOP
Sinn 103 St Sa RB Classic Watch Sondermodell
฿92,495
Seller
Classic Watch
28
DE
Hublot Zebra Bang, limited edition: No. 66/250
TOP
Hublot Zebra Bang, limited edition: No. 66/250
฿834,531
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex GMT-Master II 116758SARU
Rolex GMT-Master II 116758SARU
฿4,832,146
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Submariner Date
Rolex Submariner Date
฿209,529
Seller
Juwelier Burger, since 2001
815
NL
Omega Seamaster Aqua Terra Annual Calendar, UNGETRAGEN, Ref...
Omega Seamaster Aqua Terra Annual Calendar, UNGETRAGEN, Ref...
฿173,286
Free shipping
Seller
chronopark GmbH
 
DE
Rolex Explorer
Rolex Explorer
฿183,102
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
359
DE
Ball Engineer II Magneto S
Ball Engineer II Magneto S
฿109,563
Seller
World Wide Watch Shop
TH
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
IWC Portuguese Chronograph 41mm IW371445 Ex IW371401
฿218,589
Free shipping
Seller
SORELLE RONCO
1001
IT
Breitling Bentley Flying B
Breitling Bentley Flying B
฿260,495
Seller
Helmut Seidl GmbH
11
DE
Rolex Datejust 69173
Rolex Datejust 69173
฿120,432
Seller
Henry´s Auktionshaus AG
DE
Breguet Classique
TOP
Breguet Classique
฿901,428
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex GMT-Master Vintage UAE Air Force 1675
Rolex GMT-Master Vintage UAE Air Force 1675
฿3,991,773
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Day-Date 36 President Yellow Gold
Rolex Day-Date 36 President Yellow Gold
฿368,091
Seller
Juwelier Burger, since 2001
815
NL
Breitling 47mm Chronomat GMT Limited Edition, 2.000 Stück,...
Breitling 47mm Chronomat GMT Limited Edition, 2.000 Stück,...
฿184,612
Free shipping
Seller
chronopark GmbH
 
DE
Breitling Avenger  Seawolf
Breitling Avenger Seawolf
฿84,944
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
359
DE
Rolex Datejust
Rolex Datejust
฿184,989
Seller
Stephan Hermann GmbH
81
DE
Breitling SUPEROCEAN II 44 Total Blue Diver Pro III Chrono...
Breitling SUPEROCEAN II 44 Total Blue Diver Pro III Chrono...
฿93,250
Free shipping
Seller
SORELLE RONCO
1001
IT
Breitling Chronomat Evolution
Breitling Chronomat Evolution
฿169,888
Seller
Helmut Seidl GmbH
11
DE
Rolex Daytona Ref. 116523
Rolex Daytona Ref. 116523
฿449,260
Seller
Henry´s Auktionshaus AG
DE
Corum Admiral's Cup AC-One
TOP
Corum Admiral's Cup AC-One
฿183,965
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex Big Red Daytona 6263
Rolex Big Red Daytona 6263
฿3,359,392
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Sea-Dweller
Rolex Sea-Dweller
฿243,506
Seller
Juwelier Burger, since 2001
815
NL
Breitling 45mm Avenger II Seawolf Automatik Chronometer, Ref....
Breitling 45mm Avenger II Seawolf Automatik Chronometer, Ref....
฿105,331
Free shipping
Seller
chronopark GmbH
 
DE
Omega Seamaster Co-Axial 600 m
Omega Seamaster Co-Axial 600 m
฿132,135
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
359
DE
Chopard Mille Miglia GTS
Chopard Mille Miglia GTS
฿123,955
Seller
Kings Hill Jewellery
8
UK
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
Breitling SUPER AVENGER II Chrono 48mm Steel Black Chablon Dial
฿143,461
Free shipping
Seller
SORELLE RONCO
1001
IT
Breitling Bentley Flying B
Breitling Bentley Flying B
฿260,495
Seller
Helmut Seidl GmbH
11
DE
Rolex Datejust 126334 Slate Roman
Rolex Datejust 126334 Slate Roman
฿305,450
Seller
Labelle Jewelry
59
US
Chaumet Liens
TOP
Chaumet Liens
฿95,327
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex Explorer II Steve McQueen 1655
Rolex Explorer II Steve McQueen 1655
฿838,272
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Oyster Perpetual 39
Rolex Oyster Perpetual 39
฿171,776
Seller
Juwelier Burger, since 2001
815
NL
Panerai 47mm Radiomir 1940 3 Days, UNGETRAGEN, B&P, Referenz...
Panerai 47mm Radiomir 1940 3 Days, UNGETRAGEN, B&P, Referenz...
฿188,387
Free shipping
Seller
chronopark GmbH
 
DE
Breitling Chronomat Evolution
Breitling Chronomat Evolution
฿103,821
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
359
DE
Rolex Lady-Datejust
Rolex Lady-Datejust
฿83,056
Seller
Stephan Hermann GmbH
81
DE
Breitling AVENGER HURRICANE 50mm 24 Hours Yellow Textile
Breitling AVENGER HURRICANE 50mm 24 Hours Yellow Textile
฿226,140
Free shipping
Seller
SORELLE RONCO
1001
IT
Rolex Datejust Medium
Rolex Datejust Medium
฿112,881
Seller
Henry´s Auktionshaus AG
DE
Rolex Cellini
Rolex Cellini
฿803,466
Seller
Luxchrono Sp. z o.o.
 
PL
Corum Admiral's Cup Legend 42 Annual Calendar
TOP
Corum Admiral's Cup Legend 42 Annual Calendar
฿166,906
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex Unworn Daytona 116500LN
Rolex Unworn Daytona 116500LN
฿766,841
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Oyster Perpetual Date
Rolex Oyster Perpetual Date
฿92,495
Seller
Juwelier Burger, since 2001
815
NL
TAG Heuer Mercedes Benz 300 SLR Chronograph 1887, Service,...
TAG Heuer Mercedes Benz 300 SLR Chronograph 1887, Service,...
฿75,128
Free shipping
Seller
chronopark GmbH
 
DE
Rolex Submariner
Rolex Submariner
฿773,935
Free shipping
Seller
A. Grimmeissen Uhren An- und Verkauf
359
DE
Rolex Air King
Rolex Air King
฿105,708
Seller
Stephan Hermann GmbH
81
DE
Omega DE VILLE PRESTIGE 32,7mm.Co-Axial.Black Dial.Steel on Steel
Omega DE VILLE PRESTIGE 32,7mm.Co-Axial.Black Dial.Steel on Steel
฿91,740
Free shipping
Seller
SORELLE RONCO
1001
IT
Rolex Day-Date Special Edition Diamonds Ref. 18946 Retail EUR...
Rolex Day-Date Special Edition Diamonds Ref. 18946 Retail EUR...
฿1,468,589
Seller
Henry´s Auktionshaus AG
DE
Rolex Sea-Dweller Sea-Dweller 126600 SD43 NEW
Rolex Sea-Dweller Sea-Dweller 126600 SD43 NEW
฿461,329
Seller
Kara's Watches
181
US
Hublot Big Bang Tutti Frutti Pop Art
TOP
Hublot Big Bang Tutti Frutti Pop Art
฿819,480
Free shipping
Seller
Chronometrie Stäuble AG
 
CH
Rolex Cosmograph Daytona 116520
Rolex Cosmograph Daytona 116520
฿838,272
Free shipping
Seller
Watches & Jewellery of Bond Street Ltd
264
UK
Rolex Datejust 26 Lady Yellow Gold President Bracelet
Rolex Datejust 26 Lady Yellow Gold President Bracelet
฿156,675
Seller
Juwelier Burger, since 2001
815
NL
Omega 34mm Seamaster Aqua Terra CoAxial Master Chronometer,...
Omega 34mm Seamaster Aqua Terra CoAxial Master Chronometer,...
฿127,982
Free shipping
Seller
chronopark GmbH
 
DE
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Chronometer - Certified Precision

"Chronometer" may sound like a fancy name for a normal watch - after all, it just comes from the Greek words for "time" and "measure" - but chronometers are really something quite special. Chronometers are watches, yes, but watches that have been tried and tested and certified to meet exacting precision standards. The COSC in Switzerland determines which watches may actually call themselves "chronometers".

The Oceanic Origins of Chronometers

Though the Swiss set the standard, the English coined the word. In the quest to calculate the longitude, the Englishman Jeremy Thacker, a clockmaker of extraordinary skill, created a series of increasingly accurate clocks, well beyond what had had previously been achieved. The clocks were intended to be used aboard ships and had to keep absolutely accurate time in order to allow for calculating longitude precisely, and thus fixing the position of the ship in the vast ocean. The last of Thacker's chronometers was actually more like a very large pocket watch.

Other clockmakers - and increasingly watchmakers - copied from and improved upon Thacker's final chronometer, producing watches of greater and greater precision. The original standards for accuracy were actually far more exacting than those currently maintained by the COSC in Switzerland, so very few watches were certified as chronometers and thus very few were actually produced and sold. The original chronometer requirements for mechanical watches are no longer necessary, since digital watches can already exceed them, but chronometers are still manufactured and sold (and resold) today as examples of extremely fine precision engineering. The use of jewels and precious metals in watches owes its origins to chronometers - these materials were used to make the mechanical movements as precise as possible.

Officially Certified Chronometers

Chronometers are no longer rare. More than a million Officially Certified Chronometer certificates are issued each year. Those watches that pass the most rigorous of the COSG's tests are rewarded with a special serial number and, indeed, the right to call themselves "chronometers" at all. Chronometers must meet several requirements: they must display the seconds; they must be highly precise; they must demonstrate that precision over the course of several consecutive days of testing; they must perform precisely in different positions and at different temperatures.

Chronometers in Everyday Use

This may sound extreme, but such reliability was crucial for individuals and groups that had to rely on the precision of portable mechanical timekeepers in the past. Pilots watches, for instance, needed to perform as chronometers (and those that did not had to be hackable). The famous B-Uhren, commissioned by the German Luftwaffe and manufactured by several companies, were chronometer-certified pilots watches - or chronometers that were used as pilots watches, depending on your perspective. Interestingly, despite the many years between Thacker's invention and the production of the B-Uhren, chronometers were still tightly bound to use in navigation.

First at sea, then in the air. And, still today, at sea again - or at least under it. Some diving watches, like the Rolex submariner, are also certified chronometers. Divers must be able to reliably track how long they've been under and how much time they have to surface.

Though their accuracy may have been eclipsed by digital watches, chronometers are still useful today.

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