The most common use of a tachymeter is for measuring the approximate speed of a vehicle over a known distance. e.g.) Based on how many seconds it takes a vehicle to travel 1km or 1 mile (the available measuring range is up to 60 seconds), the average speed within the distance can be calculated.

Does anyone use a tachymeter?

Back then, hardly anyone other than racing enthusiasts and aviators found any use for chronographs and tachymeters. Today, on the other hand, most watches come with these functions, and consumers purchase them even if they only use them to check the time.

Is a tachymeter a chronograph?

A chronograph is, simply put, a stopwatch. A tachymeter, meanwhile, measures speed. A tachymeter bezel is used to calculate speed or, in other words, measure elapsed time over a fixed distance. ... To use a tachymeter bezel, press the chronograph pusher to start the stopwatch.