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A. Lange & Söhne  The official account of A. Lange & Söhne // #alangesoehne

Behind the dial – A day in the manufactory (5/6)
The LANGEMATIK PERPETUAL was the first mechanical wristwatch that combined a perpetual calendar with the Lange outsize date. The outsize date consists of two separate display elements: the units disc and the tens cross. To correctly reproduce the date sequence, the disc and the cross must advance at irregular intervals. The ingenious disc mechanism not only makes the date easily legible, it is also easy to set, because the date can be conveniently advanced day by day with a push piece.
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#alangesoehne #langematikperpetual #watchart #masterwatchmaking
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Video: Resetting the date of the LANGEMATIK PERPETUAL, causing the unit disc to switch

Behind the dial – A day in the manufactory (4/6)
The LANGE 1 TIME ZONE indicates the current time in one of the 24 time zones while simultaneously displaying the home time. The outer city ring makes it possible to set the zone easily and is slanted by 10 degrees toward the outside for better readings. Home time and zone time can be easily synchronised as required.
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#alangesoehne #lange1 #lange1timezone #watchmovement #manufacturewatch
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Video: Setting the time zone on the outer city ring of the LANGE 1 TIME ZONE

Behind the dial – A day in the manufactory (3/6)
Although the calendar module of the 1815 ANNUAL CALENDAR has a height of just 1.4 mm and a slender movement, the manually wound caliber L051.3 has a maximum power reserve of 72 hours. A correction button at 2 o’clock makes it possible to advance all indications collectively, for example when the watch has stood still for a while. Additionally, three correctors make it possible to correct the day, month and moon phase separately.
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#alangesoehne #lange1815 #1815annualcalendar #timepieceperfection
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Video: Correcting the moon phase of the 1815 ANNUAL CALENDAR

Behind the dial – A day in the manufactory (2/6)
Thanks to the patented stop-seconds mechanism, the tourbillon of the LANGE 1 TOURBILLON PERPETUAL CALENDAR can be set to one-second accuracy. The sampling mechanism for the month durations is just as precise. In contrast to most perpetual calendars, the number of days in a month is defined not by a separate program wheel but by the month ring itself as it rotates about its axis once a year.
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#alangesoehne #lange1 #tourbillon #perpetualcalendar #watchmovement
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Video: Resetting the month ring of the LANGE 1 TOURBILLON PERPETUAL CALENDAR

Behind the dial – A day in the manufactory (1/6)
Apart from the hours, minutes and seconds, the regulator dial of the RICHARD LANGE PERPETUAL CALENDAR “Terraluna” also accommodates the four perpetual calendar displays: day of the week, date, month and leap year. The instantaneously switching calendar indications ensure unambiguous readings at all times. The 14-day power-reserve indicator is placed below the displays, at the 6 o’clock position. The movement side presents an innovative and useful orbital moon phase display that depicts the constellation of the earth, moon, and sun.
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#alangesoehne #richardlange #perpetualcalendar #langeterraluna #hautehorology
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Video: Resetting the date of the RICHARD LANGE PERPETUAL CALENDAR “Terraluna”

165 Years – Homage to F. A. Lange anniversary collection (1/3)
The mirror-polished bar of the LANGE 1 TOURBILLON is precisely embedded in the dial and carries the tourbillon cage on the dial side. The patented stop-seconds mechanism allows the balance to be stopped directly and without delay inside the rotating tourbillon cage.
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#alangesoehne #lange1 #lange1tourbillon #tourbillon #timepieceperfection
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Picture: LANGE 1 TOURBILLON in honey gold, one of three “165 Years – Homage to F.A. Lange” anniversary collection timepieces

165 Years – Homage to F. A. Lange anniversary collection (2/3)
The TOURBOGRAPH “Pour le Mérite” was the first wristwatch with a one-minute tourbillon, a fusée-and-chain transmission and a rattrapante chronograph. Because of its complex mechanisms, it was possible to assemble only one timepiece per month.
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#alangesoehne #tourbograph #pourlemerite #watchcomplication #timepiecescollection
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Picture: TOURBOGRAPH “Pour le Mérite” in honey gold, one of three “165 Years – Homage to F.A. Lange” anniversary collection timepieces

165 Years – Homage to F. A. Lange anniversary collection (3/3)
The 1815 MOONPHASE in honey gold is one of three watches in the anniversary collection, which was launched in 2010. It symbolises Lange’s constant quest for the highest precision. No effort was spared to calculate an extremely accurate moon-phase train for this watch. Thanks to a suite of wheels with specific transmission ratios, the error per lunar month of the 1815 MOONPHASE is only 6.61 seconds. It takes 1,058 years for this error to add up to a deviation of one day relative to the actual lunar cycle.
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#alangesoehne #1815moonphase #lange1815 #moonphasewatch #germanwatchmaking
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Picture: 1815 MOONPHASE in honey gold, one of three “165 Years – Homage to F.A. Lange” anniversary collection timepieces

Inside the manufactory: Making of the 1815 CHRONOGRAPH (1/6)
Shortly before the watchmaker places the finished L951.5 calibre inside its case, the five hands of the 1815 CHRONOGRAPH are secured to their respective arbours. The filigreed chronograph sweep-seconds hand is the last of the hands to be mounted. Depending on the case material, it is made of gold-plated or blued steel. One of the most challenging tasks during the assembly process is to position the extremely thin and long hand precisely with the hour marker at 12 o’clock.
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#alangesoehne #1815chronograph #watchphotography #watchmakers #germanwatchmaking
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Picture: Assembly of the filigreed chronograph sweep seconds hand

Inside the manufactory: Making of the 1815 CHRONOGRAPH (2/6)
The large balance wheel with its six precisely adjustable eccentric poising weights is developed and manufactured by A. Lange & Söhne and delivers outstanding rate accuracy. Turning the small weights shifts their centres of gravity and changes the rate of the watch. The balance is driven by the freely oscillating balance spring, which is also made in-house. It is precisely paired with the characteristics of the movement and beats with a frequency of 18,000 semi-oscillations per hour. The watchmaker adds the escapement at the very end, once the chronograph mechanism has already been integrated. Of course, he must position it in the movement with extreme care.
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#alangesoehne #1815chronograph #concoursofelegance #watchphotography #watchmaking #masterwatchmaking
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Picture: Assembly of the balance

Inside the manufactory: Making of the 1815 CHRONOGRAPH (3/6)
No fewer than 13 of the 306 components of calibre L951.5 form the clutch rocker. It plays an essential role in starting and stopping a time measurement. When the button at 2 o’clock is pressed, the column wheel moves one step further. The clutch rocker falls into one of the gaps between the eight columns and then pivots the chrono clutch wheel towards the centre of the movement. The power flow between the going train and the chronograph mechanism is established, and the chronograph sweep-seconds hand begins to run.
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#alangesoehne #1815chronograph #watchphotography #watchmovement #watchmakers #germanwatchmaking
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Picture: Assembly of the clutch rocker

Inside the manufactory: Making of the 1815 CHRONOGRAPH (4/6)
The heart-lever spring keeps the heart lever tensioned. This part is – like all other components – lavishly finished by hand before the assembly. The peripheral chamfer receives a polish, then the circumference is ground and the top decorated with a flat finish. To minimise friction, the interacting surfaces are carefully flat polished on which not even the smallest scratch is tolerated once the assembly process has been completed.
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#alangesoehne #1815chronograph #watchphotography #watchmaking #masterwatchmaking
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Picture: Assembly of the heart-lever spring

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