A new Edox Chronorally 45, with a redesigned case and updated dial design, but still pretty huge with 45 millimeters
A tachymeter or tachymeter scale is a scale that can mostly be found around the rim of an analog watch. It is a converter of elapsed time (in seconds per unit) to speed (in units per hour).
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The speed can, depending on the scale, be calculated in (kilo)meters per hour, miles per hour (all kinds of miles including statute miles and nautical miles), and knots per hour. Most watches with a tachymeter have a chronograph too.
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To use it, you need to follow these steps:
- – Start the chronograph as you pass a known distance marker, typically 1 kilometer or 1 mile
- – Stop the chronograph when you pass the next distance marker
- – The scale will show a number corresponding to the speed you’re traveling in units per hour (km/h or mph)
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For example, if it takes you 30 seconds to cover 1 kilometer, the chronograph hand will point to “120” on the tachymeter scale, meaning you’re traveling at 120 kilometers per hour.
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A tachymeter only works for speeds within a range of about 60 to 500 units per hour, as the markings become compressed for shorter times. It’s a simple, effective tool for measuring speed over a fixed distance.
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Watches with a tachymeter
The Porsche Design Chronograph 1 Limited Edition for Hodinkee is a collaboration between the German brand and American watch seller
Two sunny new models for the Richard Mille RM 65-01 Automatic Winding Split-seconds Chronograph in blue and yellow
The collaboration between a watch brand and motorcycle brand leads to this Breitling Chronomat B01 42 Triumph models
CFB is refreshing their Manero chronograph with the Carl F. Bucherer Manero Flyback 40 mm and 43 mm, some in steel, some in gold
The Chopard Mille Miglia Classic Chronograph 2024 is this year’s Chopard model for the famous 1,000 mile race through Italy
The TAG Heuer Carrera Chronograph x Porsche 963 is for Porsche and Le Mans fans as it underlines the connection between the brands
The Swatch x Omega Moonswatch Mission on Earth Series is the continuation of the saga of the colab between Swatch and Omega
To celebrate their 140th anniversary the Swiss brand launches the Breitling Navitimer B12 Chronograph 41 Cosmonaute Limited Edition
The Breitling Navitimer Automatic GMT 41 celebrates 140 years of Breitling commemorating their long existence in the world of watchmaking