Tachymeter (Tachometer)

A tachymeter is a scale on a chronograph watch used to measure speed based on travel time or measure distance based on speed.

Part of speech: noun
Definition: In the context of jewelry and watchmaking, a tachymeter, or tachometer, is a scale typically found on the bezel of a chronograph watch. It's used to compute a speed based on travel time or measure distance based on speed. The user starts the chronograph at a starting point and stops it at the next; the pointer on the dial shows, through the tachymeter scale, the speed of travel between those two points. Besides its functional utility, watches featuring a tachymeter often have a sporty, sophisticated appearance, appealing to consumers looking for both functionality and style in their timepieces. The presence of a tachymeter adds a layer of complexity and innovation to watch design, making these pieces particularly desirable among enthusiasts and collectors.