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Suunto Altimeter Watches
An altimeter watch is a wristop instrument that allows the wearer to determine their current elevation. Of course, that's not all - combined with memory, an altimeter watch can keep track of your total and cumulative vertical ascents and descents, as well as the number of runs (for skiing or snowboarding, for example). In some watches, the altimeter can be used to estimate your vertical speed, or sound an alarm when you reach a set altitude. The altimeters used in Suunto watches base their measurements on air pressure - in a nutshell, the lower your altitude is, the more air there is above you is, and the heavier it is. So when you move uphill, the air pressure sensor in the watch detects the decreasing air pressure, and automatically converts the pressure drop into a reading of your increasing altitude. Of course, it is not easy to get perfectly accurate measurements of altuitude, because there many factors that can cause air pressure to flucuate. |
This is why many altimeter watches feature "temperature compensation," and why the altimeter must to be calibrated regularly (by simply entering the current barometric pressure or setting to a known altitude). An altimeter is an important and useful piece of gear for many outdoor activities, including running, biking, hiking, skiing, or snowboarding. Pilots of small planes often wear an altimeter watch as a back-up in case of instrument failure - although be aware that an altimeter of this type cannot be used successfully in a pressurized plane. Suunto makes a variety of high-end altimeter watches, each with different additional capabilities and functionality. |
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