So, if you start at 12 o'clock, when the second hand reaches the number on the scale that is your speed - say 80mph, the figure you will find at 9 o'clock - it tells you that you have travelled precisely one mile. Want more? The scale is a simple formula that allows you to measure both speed based on travel time and distance based on speed. Tachymeter comes from the Ancient Greek words for swift and measure, or rapid measurer. The tachymeter scale is also located along the bezel, which is the groove that holds the watch cover. A tachymeter is on the bezel of a watch and can measure speed based on time traveled over a fixed distance. How to use a tachymeter. From the science behind a tachymeter and watch-wearing in water to why it can seem like time is always running ahead of you, GQ's Watch Shrink Robert Johnston tackles a trio of common conundrums. Others start at 6 seconds and 600 units of speed or 9 seconds and 400 units of speed. You simply time the racecar over the measured distance and read off the speed on … Ten coolest things to do in London this week, Best duvet covers to transform your bedroom into a luxury hotel. It normally runs down to 60 - though this can be 50 on some models. How does a tachymeter work? It normally runs down to 60 - though this can be 50 on some models. As we outlined when we took a look at different types of bezel scales found on watches, a tachymeter is a scale on chronograph watches measuring speed and distance. So, to look at it another way, at 80mph you travel a mile every 45 seconds. It’s actually straightforward, even more so if your watch has a fixed tachymeter (rather than one etched on a rotating bezel). A tachymeter is a scale that may or may not appear on the face or bezel of a chronograph, which as we know is effectively a stopwatch. A tachymeter is a scale that’s inscribed around the bezel of a watch or the outside edge of the watch’s main dial. It is found on the rehaut of the watch (just inside the dial from the bezel) or can be inscribed on the bezel itself. The allows the conversion of elapsed time, in seconds per unit, to speed in units per hour. Most tachymeter scales start at the 7-second mark, which is 500 units of speed on the scale. And, of course, it works the other way as well - so, for example, if you have travelled a mile in 35 seconds, the tachymeter will tell you that you are travelling at 103mph. Find your watch's tachymeter scale at the 6-, 7-, or 9-second mark. On some watches, it's also located just outside of the … A tachymeter is the scale often found on a watch's bezel or running around the outside of the dial. A tachymeter measures distance by timing the travel over the distance while the speed is held constant. See all the most important timepieces of the year in the GQ Watch Guide 2015. The formula to create this scale is: The formula to create this scale is: Tachymeter scale value = 3,600 (number of seconds in an hour)/elapsed time in seconds Today's topic: how a tachymeter works... A tachymeter is the scale often found on a watch's bezel or running around the outside of the dial. See all the most important timepieces of the year in the GQ Watch Guide 2015. The tachymeter scale and measure times from approximately 7 seconds to 60 seconds.

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