The Phenomenon Of Inverted Caliber Construction
6 min read
For those strange few that obsess over gears, springs and levers, having a perpetual sight of the same can be pure ecstasy. It’s a harmless high of deeply rewarding proportions. Now, there can be many, but mostly weird, means to realize this kind of a high. Drooling over an open car hood, being fixated on a typewriter or, even worse, getting transfixed at the sight of a simple sewing machine are a few embarrassing ways to trip.
To prevent any aura loss from these inexplicable indulgences, there’s a horological fix.
Forget embarrassment, this mechanical hedonism usually comes with legitimate peer appreciation as a secondary reward. And we owe this pleasant bliss to watches with inverted calibers. When tiny wheels, levers and springs are brought up front via an upside-down movement construction, it not only preserves a rare sense of wonder but also treats you with genuine mechanical splendor anytime and every time.
With watches constructed with inverted calibers, you need not necessarily take them off the wrist to witness what’s the most spectacular micro-mechanical realization mankind has ever achieved. For those guilty of wanting to wear their Datograph upside down, and for a very sensible reason as well, a watch with an inverted movement construction is the only logical resolve, so far.
Here are a few fine examples of this rare and disruptive watchmaking trend.
Moritz Grossmann Backpage
When it comes to series produced German watchmaking, no one does it better than Moritz Grossman. Literally, no one. It is, undisputedly, the apex of high watchmaking decoration from Deutschland and also, regrettably, the most underrated independent watch brand in the world. This Manufacture has quietly and confidently emerged as a purveyor of the finest grade of Saxon haute horlogerie where watchmaking of a distinct and industry-defining level is practiced.
Its Backpage timepiece is of topic-relevant interest as it brings everything we can possibly love about fine German watch finishing to the dial side. The level of decoration and attention to detail is absolutely second to none as made evident by its inverse caliber 107.0. Its micro-metric regulator on a freehand engraved balance cock, triple solarized ratchet wheel, recess bolt balance wheel, heat-annealed violet-purple screws, hand-beveled bridges, and a black polished crown wheel are details of absolute refinement.
This inverse movement construction timepiece is in multiple facets of traditional horological craft of legitimate benchmark standard.
Breguet Tradition GMT 7067
It’s important to realize that with Breguet, we have what’s becoming a rare opportunity to buy a product of traditional fine watchmaking. Breguet builds its watches beautifully but in sufficient numbers to own. Its iconic Tradition series of watches is one among the brand’s multiple facets and quite easily the most striking and distinguished of them. This actual reinterpretation of Abraham-Louis Breguet’s ‘souscription’ watches made its debut in 2005 and the line’s most practical product, the Tradition GMT 7067, launched in 2012.
The face of the Tradition 7067 is every gear head’s dream realized. The core of its awe and identity is the idea of exposed mechanics realized via inversion of its caliber 507DRF. This movement replicates the architecture of one of Breguet’s handsomely-built Souscription pocket watches. It’s dial-side serves an uninterrupted view of its escapement mechanism, the central barrel, gear train, as well as the mechanism for the secondary time display. All of these front-facing elements are dedicated to display local time at 12 o’clock with home time discreetly sat in the sub-dial at 8 o’clock, and a day/night indicator at 10 o’clock. This watch leaves nothing to the imagination.
Lederer CIC 39 InVerto titanium
Flipping the horological script, literally, the Lederer CIC 39 InVerto titanium is a mastery in reverse caliber architecture and its most striking realization. The hand-wound caliber 9019 doubles down as its core aesthetic nuance and via its inverted architecture, reveals the entire mechanism composed of twin constant-force remontoirs, a dual detent escapement, dual gear trains and bridges that are finished by hand to the highest haute horlogerie standards.
With its fascinating mechanism taking center stage, the Lederer CIC 39 InVerto titanium is one of the most striking products of apparent mechanical intricacy.
Berneron Mirage 38 Miroir
This evolution of Sylvain Berneron’s asymmetrical dress watch brings to the face what’s usually displayed via a caseback. The Mirage 38 Miroir has its cal. 283 up and front. It’s a mirrored architecture of the brand’s cal. 233 that powers the conventional Mirage. With movement as the dial, signature details, such as solid 18k gold movement plates and bridges, a free-sprung balance, and distinctive guilloche engravings offer genuine decorative delight while serving the utility of creating visual markers to define the hours.
In the Mirage 38 Miroir, as mechanics shape the aesthetics, the realized product satisfies with a unique utilitarian charm that excels in its avoidance of what’s conventional.
Glashütte Original PanoInverse
The PanoInverse is Glashütte Original’s design flagship and a very important standard bearer for the German manufacture. The watch serves all the fun and excitement of a display caseback on the front while retaining the conventional codes of Saxon haute horlogerie. All of the elements of German watch movement architecture become the defining style codes here.
As beautifully finished movements are true selling points for German fine watchmaking, the PanoInverse takes this idea to the next level as its three-quarter plate, jewels set in gold chatons, dual-sided balance bridge with freehand engraved motifs and a duplex swan-neck fine adjustment mechanism as well as the power reserve indicator proudly exist on the front. High watchmaking can take many forms, and the one adopted by the Glashütte Original PanoInverse is a very special one.
Voutilainen 28TI “Inverse”
Bringing to fore something that is commonly hidden, the Voutilainen 28TI “Inverse” is based on the original Vingt-8 series. This watch flips the movement, inverting its caliber, which is the standard Cal. 28 reversed, to show the escapement with a large balance wheel, the gear train, the ratchet wheel and the crown wheel on the front. The inverse construction allows an impressive display of the beautifully constructed and finely decorated caliber on the dial side.
Lending legitimate mechanical credentials to this timepiece is the process of inverting the movement which is done correctly and better than the other realizations of this architecture. The brilliant finishing on the movement components makes it a win on all levels.
Greubel Forsey Tourbillon 24 Secondes Architecture
There's an obsessive attachment of tourbillons with Breguet. It’s rightful in all regards and every bit relevant to the brand. But this regulating device, which isn’t a complication by virtue, has been excessively experimented upon by Greubel Forsey right from when the brand made its debut with the Double Tourbillon 30° at Baselworld in 2004. This particular watch went on to demonstrate the brand’s chronometric validity, scoring 915 out of 1,000 points at the 2011 Concours International de Chronométrie, one of the highest recorded scores in the modern history of the competition.
The above defines the technical credibility of Greubel Forsey, despite the Double Tourbillon 30° far from being the brand’s most inventive product. Now, the Tourbillon 24 Secondes Architecture is one among several Greubel Forsey watches relevant to the topic of inverted caliber construction. This watch offers a complete departure from traditional movement construction which is easily perceptible as that’s what is visible on the dial side. In doing so, it exposes the caliber from every angle. This is one deliberately expressive timekeeper and featuring Greubel Forsey’s fastest-rotating and inclined tourbillon, is technically literate in tradition of the brand.
The Greubel Forsey Tourbillon 24 Secondes Architecture is the trend’s endgame realization.
Presenting a novel horological approach with the Greubel Forsey Tourbillon 24 Secondes Architecture
The legacy of Moritz Grossmann and rare facts about the German watch brand
Frequently Asked Questions
It is a watch whose movement is flipped so gears and other parts are visible on the front.
Yes, extra gearing keeps the hands moving in the usual clockwise direction.
An inverted caliber flips the movement to face front, while a skeleton cuts away parts to show it.