- Astronomical indications
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
accomplishment that A. Lange & Söhne has endowed with a most classic style.
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.