5 facts about A. Lange & Söhne’s fifth Pour le Mérite timepiece
Creations and complications
Uniting five complications and extolling the art of classic watchmaking at its core is the Tourbograph Perpetual, the fifth watch to join A. Lange & Söhne's family of mechanical microcosms known as the Pour le Mérite. With two out of the five complications dedicated solely to improving accuracy, a tourbillon function, split-seconds chronograph and an analogue perpetual calendar, this paragon of haute horlogerie is an assembly of parts that constitutes true perfection. So what goes into this ultra-complex construction of a timepiece? We give you the deets:
1. Substance over semblance
Is the glue that binds the Tourbograph Perpetual. Yes, it looks pretty slick but what's inside is where it's really impressive. There's a fusée-and-chain mechanism that wraps around the mainspring barrel and is integrated into the calibre to ensure a smooth flow of torque to the balance. Its accuracy is so on-point, you only need to adjust the calendar and moonphase once... when 2100 rolls around.
2. 684 parts and several hundred hours
Only the best watchmakers qualify for the job. A small team of specialists handled this issue of the Pour le Mérite; each with honed skill sets who've worked on prestigious horological creations, which include the A. Lange & Söhne Richard Lange Perpetual Calendar 'Terraluna' and the Datograph Perpetual Tourbillon.
3. Precision and decisions
Every individual part is manually tweaked and adjusted, amounting to not only incredibly labourious man-hours but also necessitating the utmost of a watchmaker's technical comprehension, experience-based knowledge, manual virtuosity and infinite patience. As no two assembly processes are the same, every Tourbograph Perpetual is a judgment call that requires many minute adjustments to guarantee that all the components work together perfectly.
4. Down to the nitty gritty
Completely polished inside and out, all 684 pieces are finely chiselled and touched with a final finissage using both straight and circular graining. A veritable clockwork of intricate bridges, plates, gears, screws, and diamond end stones, the sapphire-crystal caseback provides an unfettered view that displays the chronograph and rattrapante mechanism prominently.
5. An eco-system of horology
Crafted in many meticulously executed steps, the Tourbograph Perpetual Pour le Mérite is essentially a mechanical organism equipped with individual sub-systems that interact flawlessly as a whole. From wheels and levers to arbors and springs, a complex switching sequence governs the watch — and it all transpires within fractions of a second for precisely defined order so utterly immaculate, you could keeping staring at this A. Lange & Söhne masterpiece all day.
The Tourbograph Perpetual 'Pour le Mérite' is available at A. Lange & Söhne boutiques, limited to 50 pieces.