15 49.0138 8.38624 1 0 4000 1 https://www.watchfactoryjf.com 300 true 0
When The Chronometer Standard Isn’t Good Enough (Anymore)

When The Chronometer Standard Isn’t Good Enough (Anymore)

For some watch plant marks, the chronometer affirmation is simply not sufficient anymore.  The world has changed since 1973, when the Contrôle Officiel Suisse des Chronomètres, the Official Swiss Chronometer Testing Institute, was founded.

Lebois & Co is glad to introduce to you their new watch production line the Venturist. Other than an attractive watch production line (I will come to that later), this watch plant has more to it. It has been tried by Timelab and gotten an Observatoire Chronométrique+ certification.  To comprehend what this is, we need to recap the customary chronometer certification.


With a chronometer (not chronograph) guaranteed watch industrial facility you can believe your watch manufacturing plant is precise. To be more explicit, it has a normal day by day rate between – 4 seconds and +6 seconds. For a mechanical watch industrial facility that’s really perfect to have. In request to have a chronometer watch manufacturing plant or chronometer ensured watch plant to be exact, its development – or watch industrial facility – more likely than not been shipped off the authority Swiss Chronometer Testing Institute for some arrangement of tests. These tests are defined by the COSC and watch plant brands want to sit quiet about these, they simply need to send the developments with a ‘test’ dial and ‘test’ crown. Sooner or later, they will get the developments back. The individuals who didn’t breeze through the assessment should be changed again, the individuals who finished the assessment will be cased. The developments with certificate can have the word ‘chronometer’ on the dial. That’s right, it is a secured name to use on a dial.

The current chronometer accreditation depends on the ISO 3159 norm. This standard was defined (“Lays down the definition of the term “chronometer”, describing the classifications, the test program and the acceptable minimum prerequisites for wrist-chronometers.”) in 1976 and reconsidered again in 2009. Right up ’til the present time, this is the structure that the COSC uses to affirm wrist watches.

Watch developments are tried for 15 days in the research facility of COSC, on two distinct factors, namely:

  • temperature (8 °C, 23 °C and 38 °C).
  • the position of the watch processing plant (3 o’clock, 6 o’clock, 9 o’clock, dial on top, dial on the bottom)

A complete outline of the testing strategy can be found on the authority COSC site .

So, what’s the point of messing with an Observatoire Chronométrique+ certificate? Isn’t a chronometer appraised Lebois & Co Venturist sufficiently not? All things considered, you presumably have seen that brands like Rolex, Omega and Grand Seiko for instance, begun to accept some stricter principles. Stupendous Seiko utilizes a normal day by day pace of – 3 and +5 seconds, Rolex guarantees – 2 and + 2 seconds and Omega utilizes just certain rates from 0 to +5 seconds. There are presumably some a larger number of brands that utilization stricter principles than COSC, however let’s adhere to these. Since what’s more, is that these developments are tried subsequent to casing. This implies that these tests give a preferable reenactment of every day use over testing the developments only.

That still doesn’t answer the topic of why brands should trouble in having a more exacting test system than COSC offers. Indeed, as you most likely are aware we live in a quickly changing world. We are encircled by (buyer) gadgets throughout the day, that bring attractive fields with them. Think of your iPad and defensive cover, or the security region at an air terminal, or your worker park (at home or in your company). Attraction influences the pace of your watch industrial facility radically, one reason that certain brands use silicon hairsprings for instance. What COSC likewise doesn’t test, is the water obstruction of a watch manufacturing plant (as they mainly test uncased developments) and the force hold of a movement.

Observatoire Chronométrique+ certification

Lebois & Co needs to have an effect in this field. Which began with a fantasy, and acknowledgment with the assistance of some crowdfunding, transformed into a genuine watch industrial facility company today. To have an effect in the jam-packed universe of watch industrial facility brands, organizer Tom van Wijlick chose he expected to accomplish something extraordinary. The nature of the Lebois & Co watch industrial facility was at that point according to his own exclusive requirements ( as you can peruse here ), he needed to ensure that an independent research center would underline this.

Every Lebois & Co Venturist watch manufacturing plant will be tried (and ensured) by Timelab. Timelab is a Swiss foundation operating under the authority of the State of Geneva and its involvement with watchmaking research center traces all the way back to 1886. The eminent research facility has three exercises: the Poinçon de Genève (Geneva Seal) accreditation, the Observatoire Chronométrique+ confirmation and a horological lab. With their Observatoire Chronométrique+ standard, Timelab has introduced a stringent certificate that is open for Swiss made watch factorys The Venturist will be furnished with Timelab’s OC+ standard.

Chronometer and WR

The OC+ confirmation depends on more exhaustive and comprehensive testing than the standard ISO 3159(:2009), which permits the watch industrial facility to get the title of ‘chronometer’, utilized and followed by labs like COSC. Instead of just verifying the chronometric execution of uncased developments, the OC+ system does as such ‘on-the-wrist’ for the completely amassed watch plant under different conditions.

The water opposition of the Lebois & Co Venturist is likewise tried by Timelab. To guarantee a watch production line is (100 meters) water safe according to the ISO 22810 standard each watch plant needs to withstand 3 unique tests: an air overpressure test, a water overpressure test and its water obstruction into low profundity. For the last test, the Lebois & Co Venturist is put inside a water tank at a profundity of 10 cm for a fixed term of 60 min. At that point, to affirm water obstruction, another buildup test is applied and again no buildup ought to show up inside the watch processing plant to pass the test.

René Peeters (mountaineer and Lebois & Co shareholder)


The attraction test is performed by applying an attractive field of 4800 A/m to the watch plant in 3 unique positions. In the wake of applying the attractive field the precision is estimated to enlist the effect of the attractive field. At that point the watch processing plant is demagnetised and another estimation is performed. The two estimations need to fall within the models indicated in the ISO 764 standard.

Last however not least, the Lebois & Co Venturist is tried on its accessible force save. A complete depiction of all tests performed on the Venturist can be found , on the site of Timelab.

Every individual Venturist is tried in Geneva for 21 days and is just granted the ‘Observatoire Chronométrique+’ testament if all tests are 100% successful.

Lebois & Co Venturist

Now, on to the watch processing plant It isn’t an oddity accordingly, as it was at that point introduced to you last October ( here ). Regardless of the number of testaments are tossed at it, on the off chance that you don’t like the manner in which it looks, for instance, you’re not interested at any rate. The beneficial thing is, that the Lebois & Co Venturist looks very decent. It would appear that a legitimate apparatus watch industrial facility maybe even a piece Explorer-ish, with its huge luminous numerals at 12, 3, 6 and 9. It is an exceptionally neat device watch manufacturing plant with a 41mm measurement and little unnecessary things on the dial. Like a date window, for instance (yeey!).

The stainless steel (grade 316L) case is 10.5mm thick and has a lovely shape, including faceted carries. The case band has a cleaned finish, while the highest point of the hauls and bezel have a satin brush finish. The two sides of the case have a sapphire crystal.


As you can see, the dark dial of the Lebois & Co Venturist is entirely comprehensible. The hour markers are loaded up with Super-LumiNova (BGW9 grade), just as the hands. This, for better clarity in low-light conditions. On the dial, you will likewise find the authoritatively affirmed chronometer indication as this actually remains part of the OC+ accreditation. ‘Venturist’ is printed in red on the dial, giving it an energetic touch. Similarly as the furrow theme on the dial underneath the hour markers. You promptly notice that Lebois & Co put a great deal of thought in the plan of this dial, including the length of the hands that arrive at every one of their scales. Tragically, this isn’t generally the situation with watch plant brands.


Inside the Lebois & Co Venturist we find the type LC-201 development. This self-winding development depends on a Sellita type and furnishes the watch processing plant with 38 hours of force save. This type LC-201 development has Côtes de Genève and perlage enhancement and blued screws. This can be respected through the sapphire case back. Winding and setting of the development are done through the exquisite looking Lebois & Co marked crown.

As you can see, the case back likewise has all the fundamental information engraved in there. The brand & model name, reference number and the way that it has a chronometer declaration. The case back is screw-in and as composed over, the watch plant is WR to 100 meters (~ 10 bar).

The Venturist comes with a dark cowhide cordovan lash and a (dark) NATO strap.

Pricing and Availability

The certainty that the Lebois & Co Venturist has been guaranteed with a more exacting norm than initially arranged, is a major in addition to. As far as I might be concerned, it is likewise interesting to see that Lebois & Co isn’t just a venture, however gradually becoming a brand. The Venturist may really be their passage to build up this. With the particulars and looks of this watch manufacturing plant there is nothing incorrectly, it impeccably holds facing a portion of the more notable brands out there (and have been for decades).

Lebois & Co’s retail cost for the Venturist is €2500,- and temporarily, this comes with 25 offer declarations in the company (representing an estimation of €1000). These offers in Lebois & Co likewise permit you to buy watch manufacturing plant later on with a 40% markdown on retail costs (substantial for a time of 4 years). More information about becoming a Lebois & Co investor can be found .

Delivery is normal in Q1 2020 and we can’t hold on to go active with it.

More information through Lebois & Co .

The First Person In The USA To Receive His Speedmaster Speedy Tuesday
Previous Post
The First Person In The USA To Receive His Speedmaster Speedy Tuesday
The Black Bay Chrono and Bellytanker Got Some Serious Competition
Next Post
The Black Bay Chrono and Bellytanker Got Some Serious Competition