Teddy Baldassarre
What is a Rehaut on a Watch Dial?
Most parts of a watch that you’ll encounter in your pursuit of horological knowledge are names that are fairly familiar and mostly self-explanatory: case, dial, hands, movement. (We run down the gamut of the most important watch parts in this article). But now and then, you may read about, or hear someone referring to, a watch’s rehaut - a somewhat intimidating-sounding French term that might give you pause at first. What is a rehaut, and what is it used for? Read on. Put simply, a rehaut (properly pronounced “Re-OHH” without the hard “T” sound at the end) is the French word for “flange,” which is the English term most often used in its place when discussing watches. It describes the rim between the periphery of the dial and the crystal. Unlike dials and cases and hands, not every watch has one. But for many of those that do, the rehaut is not only a frame that fills in the space between the dial edge and the crystal but also a utilitarian element that can add interest and even useful information to the dial itself. Some watchmakers use the rehaut for staging the hour or minute markers, In the case of chronographs, like the TAG Heuer Carrera featured above, the rehaut can provide a spot for added functional markings like a tachymeter scale (which can use the built-in stopwatch to measure speeds relative to distance) or a pulsimeter (which works with the chronograph to measure heartbeat rates). Other watches might use the rehaut for calendar indications ...
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