- Astronomical indications
Tourbograph Perpetual "Pour le Mérite"
A. Lange & Söhne 2017
Tourbograph Perpétuel «Pour le Mérite» square
A. Lange & Söhne reserves its "Pour le
Mérite" collection for its most technically accomplished creations. The
fifth timepiece to join the range, the Tourbograph Perpetual brings together a
constant-force fusee-and-chain transmission, a tourbillon escapement, a
split-seconds chronograph, and a perpetual calendar. An impressive
accomplishment that A. Lange & Söhne has endowed with a most classic style.
The dial with its Arabic numerals, railroad minutes and blued steel or
rhodium-plated gold hands, and the trefoil arrangement of the subdials are a
tribute to the Manufacture's famed pocket watches. This traditional approach is
also evidenced in the construction of the movement, such as a column-wheel
transmission for the chronograph and a screwed balance.