Hands-On With Arnold & Son Tourbillon Chronometer No. 36 Watch

Symmetry and skeletonization are two key traits of the new Swiss Arnold & Son Tourbillon Chronometer No. 36, a watch that wants to be a tribute to the Chronometer No. 1/36 or “Arnold 36”, the first pocket watch by John Arnold to be referred to as a “chronometer” for its superior timekeeping capabilities.


The John Arnold Chronometer No. 1/36 or “Arnold 36”, 1798 – Courtesy of the National Maritime Museum Greenwich, UK


Arnold & Son Men’s Watch characterizing feature of traditional English chronometer movements, the main pivoting elements such as the wheels, barrels, the tourbillon, and others are each mounted on their own bridge.

The triangular, multilevel bridges (no less than thirteen) are mostly skeletonized, providing a more contemporary sense of three-dimensional depth to the entire timepiece.

Featuring a three-spoke design, the one-minute tourbillon is held by a skeletonized and mirror-polished top bridge. Its cage comprises 58 components but weighs less than a gram.

The tourbillon is visually counterbalanced by the small seconds display positione between 7 and 8 o’clock.

A COSC certified chronometer beating at 28,800 vibrations per hour, the entirely in-house designed and manufactured A&S8600 calibre features a smooth sand-blasted main plate and bridges with chamfered and polished edges.


The main plate and bridges are treated with a golden coating. The main plate is also set with several mirror-polished 18k gold chatons, while the wheels in the gear train are embellished with circular satin finishing with chamfered and polished edges. The beveled screws have mirror-polished heads.


The double barrels, embellished with laser-engraving decoration, provide a considerable power reserve of 90 hours when fully wound.

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