Lange & Söhne’s traditional values in watchmaking.Ībove: Richard Lange Perpetual Calendar Terraluna in white gold, case diameter 45.5mmĪbove: Richard Lange Perpetual Calendar Terraluna in pink gold, case diameter 45.January 2 - New Moon. Under the dial, an intricate network of star wheels, springs, cams, yokes, racks and wheels – all beautifully finished and chamfered – affirms A. The peripheral 24-hour scale provides a time-of-day reference for the northern hemisphere.Ībove: Position of the sun (represented by the balance) in relation to the moon and earth It is daytime on the half that faces the sun (the balance) and night-time on the other. In the centre of the display, the earth rotates about its own axis once a day. Thus, the position and phase of the moon are indicated simultaneously. It appears as a bright sphere on the opposite side of the earth on full-moon days. On new-moon days, the dark moon stands between the earth and the sun.
In the constellation view, the position of the sun is occupied by the balance. The progression of the moon phases can be observed through the aperture in the celestial disc. Beneath it, the lunar disc rotates, featuring two round new moons. The mechanism reproduces the synodic month of 29 days, 12 hours, 44 minutes, and 3 seconds so precisely that it takes 1,058 years before the display needs to be corrected by one day.
On the star-studded celestial disc, the moon – visible through a round aperture – orbits around the earth anti-clockwise once a month. Revealed through the expansive case back, a unique orbital moon phase display shows not only the phases of the moon but also the location of the moon relative to the earth and the sun. Ĭalibre L096.1, however, hides a secret – one that only the wearer and true Lange connoisseurs know. In addition to the balance spring, the remontoir spring of the constant-force escapement is also made in-house. Therefore, high rate accuracy is assured from the first day to the last. In 10-second intervals, the constant force escapement releases an identical portion of energy to the balance, thus ensuring that torque remains constant, and that amplitude doesn’t vary. Lange & Söhne incorporated a constant force escapement to regulate the power flow and keep the rate stable. To ensure that the 14 days of running power is delivered smoothly to the balance, the master watchmakers at A. To keep the power for the instantaneous switching process as low as possible, the required energy isn’t robbed from the going train, but rather, gradually built up via a cam over a period of one month and released in one swift motion at the stroke of midnight.Ĭalibre L096.1 is a double barrel manually-wound movement. All of its calendrical displays switch instantaneously, and this perpetual calendar remains accurate till the year 2100.īoasting a 14-day long power reserve, this slender window at six o’clock clearly informs the wearer of the movement’s state of wind. Leap year indication is displayed in red, next to the 15th minute numeral. Day of the week and month of the year are read off two smaller apertures within the small seconds circle and hour circle respectively. The date is, very obviously, read through the two prominent apertures at 12 o’clock. Lange has made several perpetual calendars till date and none of them follows the typical four-counter layout as the manufacture favours a pure aesthetic. Seyffert had been instrumental in transforming Dresden into a hub of precision horology in the early 19th century. The inspiration for this comes from one Johann Heinrich Seyffert who made, in 1807, a world famous regulator which resides today in the Mathematics and Physics Salon in Dresden. Like the Richard Lange Tourbillon “Pour Le Mérite” of 2011, it also adopts a regulator-style dial design. Beginning with its most obvious characteristics, it is the first Richard Lange model to feature a the signature Lange outsized date. Lange & Söhne’s 2014 collection, the Richard Lange Perpetual Calendar Terraluna is remarkable on many levels.
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