Altimeter (altimeter). Travel Tips

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Altimeter (altimeter). Travel Tips

Tourist tips

Altimeter - a device for measuring altitude above sea level. With altitude, atmospheric pressure decreases, and the altimeter records its change. Knowing the altitude of your own location can be very useful when orienting in the mountains in poor visibility conditions. For example, when you climb in dense fog and finally reach the top, can you be completely sure that you climbed the exact peak that was the goal of your expedition, and not some intermediate one? The altimeter will give you an accurate answer.

The cost of a correct answer is especially high if there is only one safe direction down the mountain, which will need to be maintained by compass. If you mistakenly take the desired course from the wrong mountain, serious troubles may await you ahead.

In addition, it is possible that during the descent you will need to deviate from the course to go around a cliff or avoid a steep cliff. In poor visibility conditions, the altimeter will tell you when it's time to change course.

Since atmospheric pressure also depends on the meteorological situation, the altimeter readings must be periodically checked against known altitude marks, for example, while being at sea level or on a hill, the exact height of which is indicated on the map.

When using the altimeter, consider weather conditions. In stormy weather, when atmospheric pressure changes quite quickly, you need to adjust the device readings as often as possible, since within an hour or two after the next adjustment, its readings may not correspond to the altitude of the area where you are. In good, stable weather in anticyclonic conditions, when the atmospheric pressure is fairly constant, the altimeter works more reliably and does not need to be checked frequently.

Not so long ago, altimeters were massive and expensive instruments that were used only by topographers and participants in serious high-mountain expeditions. In recent years, lightweight wrist altimeters have appeared on the market and are offered to consumers at very reasonable prices. Many devices are multifunctional and can serve, for example, as a barometer and an electronic compass.

The very ability of an altimeter to estimate atmospheric pressure determines the possibility of its use as a barometer. When at a constant altitude, such as at a base camp or on a boat, note changes in gauge readings caused by weather conditions and use the resulting data to forecast the weather.

Changes in readings overnight can indicate an upcoming change in weather. If your camp miraculously rises to the skies overnight, it means that the atmospheric pressure has dropped, which, as a rule, portends bad weather. An increase in pressure, indicated by a decrease in instrument readings, often indicates an imminent improvement in the weather.

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