Chronometer


"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". More...

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Panerai Ferrari Granturismo FER00011 Yellow MINT Complete Panerai Ferrari Granturismo FER00011 Yellow MINT Complete Automatic; Condition 1 (mint); Year 2009; With Box; With Papers; Location: United Kingdom, London; Reference: FER00011. Movement: automatic Panerai OP XII Calibre with 27 jewels, 28,800 vph,... Available immediately $ 4,737   since
2012
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Zenith 18k rose gold Chronomaster Moonphase Zenith 18k rose gold Chronomaster Moonphase Ref. No. 17 0240 410; Pink gold; Automatic; Condition 1 (mint); Location: United States, MA, Boston; Zenith 18k rose gold Chronomaster Moonphase, automatic, size 40mm. Zenith ref. 17 0240 410 with... Available immediately $ 9,800   since
2008
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Breitling Navitimer (old II) 2-tone with Bracelet  MINT Breitling Navitimer (old II) 2-tone with Bracelet MINT Ref. No. D13022; Gold/Steel; Automatic; Condition 1 (mint); Year Circa 2000; With Papers; Location: United States, NY, New York; * COMES WITH SEA WAVE DIAMOND'S 2-YEAR LIMITED WARRANTY* This Navitimer is very hard to... Available immediately $ 6,250   since
2012
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Carl F. Bucherer 10614.02 Limited Edition Patravi Tribute to... Carl F. Bucherer 10614.02 Limited Edition Patravi Tribute to... Ref. No. 00.10614.02.33.01; White gold; Automatic; Condition 1 (mint); With Box; Location: United States, AZ, Scottsdale; Extremely Limited Edition of only 50 pieces, worldwide! Condition: pre-owned, in... Available immediately $ 15,900   since
2006
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Rolex COSMOGRAPH DAYTONA IN STAINLESS STEEL Rolex COSMOGRAPH DAYTONA IN STAINLESS STEEL Ref. No. 116520; Steel; Automatic; Condition 0 (unworn); Year 2014; With Box; With Papers; Location: United Kingdom, London; BRAND NEW ROLEX COSMOGRAPH DAYTONA IN STAINLESS STEEL CARR Price £8,795 Still the most... Available immediately $ 14,905   since
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Breitling Navitimer World A2432212/B726/441X/A20BA.1 Breitling Navitimer World A2432212/B726/441X/A20BA.1 Ref. No. A2432212/B726/441X/A20BA.1; Steel; Automatic; Condition 0 (unworn); Year 2014; New; With Box; With Papers; Location: United Kingdom, Preston; Breitling Navitimer World Ref: A2432212/B726/441X/A20BA.1 RRP: £4,710 OUR PRICE:... Available immediately $ 5,986   since
2012
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Omega De Ville Ladymatic Co-Axial 42563342 Omega De Ville Ladymatic Co-Axial 42563342 Ref. No. 425.63.34.20.55.002; Yellow gold; Automatic; Condition 0 (unworn); Year 2014; New; With Box; With Papers; Location: United Kingdom, Wilmslow; The OMEGA Ladymatic is a mesmerizing blend of extraordinary design and truly innovative... Available immediately $ 11,855   since
2013
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Omega Planet Ocean 600 M Omega Co-Axial 232.30.38.20.01.001 Omega Planet Ocean 600 M Omega Co-Axial 232.30.38.20.01.001 Ref. No. 232.30.38.20.01.001; Steel; Automatic; Condition 0 (unworn); New; With Box; With Papers; Location: United States, PA, Southampton; Retail Price::  $6,100.00 This is the Planet Ocean 600 M Omega Co-Axial watch. The watch... Available immediately $ 3,890   since
2010
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Rolex Skydweller Rose Gold with Bracelet 326935 - Pink... Rolex Skydweller Rose Gold with Bracelet 326935 - Pink... Ref. No. 326935; Pink gold; Automatic; Condition 0 (unworn); Year JULY 2014; With Box; With Papers; Location: United Kingdom, London; Rolex Sky-Dweller The extremely sought after 'Everose' Sky-Dweller on the pink gold bracelet... Available immediately $ 50,672   since
2011
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Ulysse Nardin GMT +/- Perpetual, Silver Dial, Limited Edition... Ulysse Nardin GMT +/- Perpetual, Silver Dial, Limited Edition... Ref. No. 322-66/91; Pink gold; Automatic; Location: United States, NY, New York; Super Exclusive & Extremely Rare Ulysse Nardin GMT +/- Perpetual Calendar Limited & Numbered... Available immediately price on request   since
2008
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Audemars Piguet SCUBA DIVER RED BOUTIQUE ROYAL OAK OFFSHORE... Audemars Piguet SCUBA DIVER RED BOUTIQUE ROYAL OAK OFFSHORE... Ref. No. 15701ST.OO.D002CA.03; Steel; Automatic; Condition 0 (unworn); With Box; With Papers; Location: United States, NY, New York City; AUDEMARS PIGUET SCUBA BOUTIQUE RED "DIVER" - ROYAL OAK OFFSHORE STAINLESS STEEL - LIMITED... Available immediately $ 18,995   since
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Breitling CHRONOMAT EVOLUTION YELLOW GOLD DIAMOND - LIMITED 25... Breitling CHRONOMAT EVOLUTION YELLOW GOLD DIAMOND - LIMITED 25... Ref. No. K1335663/A572; Yellow gold; Automatic; With Box; With Papers; Location: United States, NY, New York City; EXTREMELY RARE & EXCLUSIVE MODEL ~~~ BREITLNG CHRONOMAT EVOLUTION YELLOW GOLD DIAMOND **... Available immediately $ 33,500   since
2008
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Chopard 16/1903-1001 L.U.C. Quattro Mark, White Gold Chopard 16/1903-1001 L.U.C. Quattro Mark, White Gold Ref. No. 16/1903-1001; White gold; Manual winding; Condition 1 (mint); With Box; With Papers; Location: United States, AZ, Scottsdale; Condition: pre-owned, in mint condition. Box and papers: with box and papers. ... Available immediately $ 15,500   since
2006
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Rolex COSMOGRAPH DAYTONA IN 18CT EVEROSE Rolex COSMOGRAPH DAYTONA IN 18CT EVEROSE Ref. No. 116505; Pink gold; Automatic; Condition 0 (unworn); Year 2014; With Box; With Papers; Location: United Kingdom, London; ROLEX COSMOGRAPH DAYTONA IN 18CT EVEROSE BRAND NEW List Price £25,100 CARR Price £18,995 O... Available immediately $ 32,191   since
2012
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Breitling Transocean Chronograph Unitime RB0510U0-A733-754P-R2... Breitling Transocean Chronograph Unitime RB0510U0-A733-754P-R2... Ref. No. RB0510U0-A733-754P-R20BA.1; Red gold; Automatic; Condition 0 (unworn); Year 2014; New; With Box; With Papers; Location: United Kingdom, Preston; Breitling Transocean Chronograph Unitime Ref: RB0510U0-A733-754P-R20BA.1 RRP £19,490 OUR... Available immediately $ 24,768   since
2012
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Audemars Piguet Ladies Royal Oak Offshore 26092OK Audemars Piguet Ladies Royal Oak Offshore 26092OK Ref. No. 26092OK; Pink gold; Automatic; Condition 1 (mint); With Box; With Papers; Location: Belgium, Antwerpen; Retail price: 74.000 EUR 100% Genuine - Fully Serviced - As New - Keeps Excellent Time -... Available immediately $ 49,016   since
2012
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Rolex Submariner Verde 40mm Date Ref. 16610T LV 40mm Baujahr 2004 Rolex Submariner Verde 40mm Date Ref. 16610T LV 40mm Baujahr 2004 Ref. No. 16610T LV; Steel; Automatic; Condition 1 (mint); Year 2004; With Box; Location: Germany, Stuttgart; Rolex Submariner 40mm Date Ref. 16610T LV Verde 40mm - Gehäuse Edelstahl poliert und satiniert,... Available immediately $ 8,051   since
2003
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Audemars Piguet Royal Oak Offshore Arnold Schwarzenegger Audemars Piguet Royal Oak Offshore Arnold Schwarzenegger Ref. No. 26007BA.OO.D088CR.01; Yellow gold; Automatic; Condition 1 (mint); With Box; With Papers; Location: Belgium, Antwerpen; In new condition. What you see is what you will receive. Including new Audemars Piguet... Available immediately $ 33,237   since
2012
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Audemars Piguet Royal Oak Offshore Grand Prix, Limited Edition... Audemars Piguet Royal Oak Offshore Grand Prix, Limited Edition... Ref. No. 26290PO.OO.A001VE.01; Platinum; Automatic; Location: United States, NY, New York; Super Exclusive & Extremely Rare THE ONE & ONLY Audemars Piguet Grand Prix Platinum, Limited &... Available immediately $ 129,995   since
2008
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Rolex GMT Master II 40mm Weißgold Diamond Ref. 116759 SANR Rolex GMT Master II 40mm Weißgold Diamond Ref. 116759 SANR Ref. No. 116759 SANR; White gold; Automatic; Condition 1 (mint); With Box; With Papers; Location: Germany, Stuttgart; Rolex GMT Master II 40mm Weißgold Diamond Ref. 116759 SANR - der gesamte Brillantbesatz ist nicht... Available immediately $ 147,585   since
2003
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Graham Silverstone Stowe SEALED 44 Ref. 2SAAB.B02A Graham Silverstone Stowe SEALED 44 Ref. 2SAAB.B02A Ref. No. 2saab.b02a; Condition 0 (unworn); Year 2014; Location: United States, NY, New York; *COMES WITH SEA WAVE DIAMOND'S 2-YEAR LIMTED WARRANTY* For sale is a BRAND NEW and SEALED... Available immediately $ 4,180   since
2012
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Breitling Montbrilliant Eclipse - 18k - Rose - Perfekt - Full Set Breitling Montbrilliant Eclipse - 18k - Rose - Perfekt - Full Set Ref. No. H43330-304 / H43330; Pink gold; Automatic; Condition 1 (mint); Year 1999; With Box; With Papers; Location: Germany, Karlsruhe; Including Breitling, carton, description warranty certificate from 1999, chronometer certificate,... Available immediately $ 11,952   since
2014
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Breitling Superocean Heritage 46mm Breitling Superocean Heritage 46mm Ref. No. A1732016; Steel; Automatic; Condition 1 (mint); Year 2008; With Box; With Papers; Location: Netherlands, 's Hertogenbosch; The Breitling Superocean Heritga in like new complete with orginal box and papers. The watch... Available immediately $ 3,156   since
2012
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Audemars Piguet Royal Oak Offshore Chronograph new model full... Audemars Piguet Royal Oak Offshore Chronograph new model full... Ref. No. 26400SO.OO.A002CA.01; Steel; Automatic; Condition 1 (mint); Year 12/2011; With Box; With Papers; Location: Belgium, Antwerpen.; Audemars Piguet Royal Oak Offshore Chronograph new model full set in mint condition from 12/2011... Available immediately $ 24,038   since
2009
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Rolex Daytona Cosmograph 16528 Diamonds Dial Rolex Daytona Cosmograph 16528 Diamonds Dial Ref. No. 16528; Yellow gold; Automatic; Condition 1 (mint); Year 1992; With Box; With Papers; Location: Italy, Cuneo; Equal AL NEW,complete with everything original kit,inner box, outer box,papers,warranty as... Available immediately $ 24,844   since
2011
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Chopard Mille Miglia "Super Fast" Classic Racing 18kt... Chopard Mille Miglia "Super Fast" Classic Racing 18kt... Ref. No. 161276; Pink gold; Automatic; Condition 1 (mint); Location: United States, NY, New York; * COMES WITH SEA WAVE DIAMOND'S 2-YEAR EXTENDED LIMITED WARRANTY * The Superfast collection... Available immediately $ 18,155   since
2012
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Breitling Cockpit Chrono Breitling Cockpit Chrono Ref. No. A13357; Steel; Automatic; Condition 1 (mint); With Box; With Papers; Location: Netherlands, Maastricht; All our watches are delivered with 12 months of warranty. The pictures we take are... Available immediately $ 4,264   since
2005
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Audemars Piguet Royal Oak Offshore Rubens Barrichello III... Audemars Piguet Royal Oak Offshore Rubens Barrichello III... Ref. No. 26284RO.OO.D002CR.01; Red gold; Automatic; Location: United States, NY, New York; NO NEED FOR A FANCY INTRODUCTION FOR THIS BAD BOY...... AUDEMARS PIGUET BARRICHELLO III... Available immediately $ 78,995   since
2008
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Breitling Chronomatic / Chrono-Matic - 18k - NOS - Only 250... Breitling Chronomatic / Chrono-Matic - 18k - NOS - Only 250... Ref. No. H41360; Pink gold; Automatic; Condition 1 (mint); Year 2005; With Box; With Papers; Location: Germany, Karlsruhe; Including Breitling wooden box, carton, chrono-Matic Description warranty certificate from 2005,... Available immediately $ 13,295   since
2014
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Breguet MARINE ROYALE ALARM WHITE GOLD 45mm-EXCLUSIVE Breguet MARINE ROYALE ALARM WHITE GOLD 45mm-EXCLUSIVE Ref. No. 5847BB/92/5ZV; White gold; Automatic; Condition 0 (unworn); With Box; With Papers; Location: United States, NY, New York City; Drop-Dead Gorgeous!!! MARINE ROYALE wristwatch in 18-carat white gold. Self-winding movement... Available immediately $ 37,849   since
2008
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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.