Quick Answer
When purchasing a survival altimeter, look for a device that is accurate, reliable, and easy to use, with features such as an automatic altitude reset, a pressure sensor, and a built-in compass. Consider a device with a resolution of 1-5 meters and a refresh rate of 1-2 times per second. Also, check the device's power source, battery life, and durability.
Choosing the Right Device
When selecting a survival altimeter, consider the terrain and conditions in which you will be using it. If you will be hiking in dense forest or urban areas, a device with a high resolution and refresh rate may be more important. In contrast, a device with a lower resolution and refresh rate may be sufficient for use in open terrain or at high elevations.
Features to Look For
A good survival altimeter should have a number of key features, including an automatic altitude reset, a pressure sensor, and a built-in compass. The automatic altitude reset feature allows the device to reset to sea level or a user-defined altitude, which can be useful when transitioning between different elevations. The pressure sensor measures atmospheric pressure to determine altitude, while the built-in compass provides direction information.
Calibration and Maintenance
To ensure that your altimeter is accurate and reliable, it is essential to calibrate it regularly. This can be done by resetting the device to a known altitude, such as an elevation marker on a trail. Additionally, be sure to maintain your altimeter properly, storing it in a protective case and keeping the battery terminals clean to prevent corrosion.
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