Introduction to the Arnold & Son Constant Force Tourbillon 11
The Arnold & Son Constant Force Tourbillon 11 marks the brand’s 260th anniversary with a watch that combines constant force technology and tourbillon regulation. The movement maintains rate stability across the power reserve through its constant force mechanism, while the visible tourbillon at six o’clock validates the regulating system’s motion at one-second intervals.
Technical Marvels of the Constant Force Tourbillon 11
Constant Force Mechanism
The Constant Force Tourbillon 11 employs a constant force device upstream of the escapement to deliver uniform torque to the balance wheel throughout the mainspring’s discharge. This eliminates the torque variation inherent in traditional gear trains, allowing rate to remain stable whether the mainspring is fully wound or nearly depleted. The innovation directly addresses a longstanding challenge in mechanical horology: maintaining chronometric performance across the full power reserve.
Case and Materials
The case measures 43 mm in diameter and features a polished white gold finish. The dial presents a clean aesthetic with Arabic numerals and a power reserve indicator at 12 o’clock. The tourbillon cage rotates once per minute and occupies the lower half of the dial, offering unobstructed views of the constant force mechanism and balance assembly through the sapphire caseback.
Final Thoughts
The Arnold & Son Constant Force Tourbillon 11 represents a direct lineage to John Arnold’s innovations in marine chronometry and terrestrial precision timekeeping. Its constant force system continues the brand’s tradition of addressing rate stability through mechanical solutions rather than empirical adjustment. For collectors seeking watches that combine functional horology with anniversary editions, explore ARNOLD & SON to discover additional timepieces from the manufacture.
Frequently Asked Questions
What is the Arnold & Son Constant Force Tourbillon 11 designed to commemorate?
The Arnold & Son Constant Force Tourbillon 11 was created to commemorate the 260th anniversary of the Arnold & Son brand, marking over two and a half centuries since its founding.
How does the constant force technology in this watch improve its performance?
The constant force device maintains uniform torque delivery to the balance wheel throughout the mainspring’s discharge, eliminating the rate variation caused by declining mainspring tension as the watch runs down.
What are the key design features of the Constant Force Tourbillon 11?
The watch features a 43 mm white gold case with a dial-mounted tourbillon visible at six o’clock, a power reserve indicator at 12 o’clock, and Arabic numerals. The sapphire caseback provides views of both the tourbillon and constant force mechanism.
