Does a Tachymeter Bezel Rotate?

Rotating scale
Some tachymeter scales are on a rotating, indexed bezel. This allows two additional modes of use: The tachymeter bezel can be aligned with a free running second hand, and, more subtly, can be used to find the average speed over longer times/distances.

How do you use a tachymeter bezel?

To use a tachymeter bezel, press the chronograph pusher to start the stopwatch. Once the object (for instance, a car driving one mile) passes the finish line, press the pusher again to stop the stopwatch. Then reference the tachymeter scale marker adjacent to the second hand; this figure tells you the speed of the car.

Does the bezel rotate?

Rotating the bezel is done to set a particular time of reference. The most common approach for a diver would be to rotate their bezel so that the 12 o'clock marker signifies when it is time to exit the water. A Rolex Submariner on ablue rubber Everest Bandwith its bezel rotated 19 minutes.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.