Frequently Asked Questions
Why carry a compass when you've got GPS?
Because GPS can run out of battery or lose signal, while a compass always works, no power needed. It's the essential backup navigation tool, as long as you know how to use it with a map.
What's the declination adjustment for?
Declination is the difference between magnetic north (shown by the needle) and true north (the one on the map). Setting it correctly helps you avoid bearing errors over long distances - a real boost to precision when you're navigating.
What is a mirror compass?
This is a compass with a mirror set into the lid: you sight a distant point while reading the bearing in the reflection. It allows for precise readings, which come in very handy in high mountain terrain and for advanced navigation.
How to choose your hiking compass
Look for needle stability, clear readability, a declination adjustment, and, depending on your needs, a sighting mirror, a clinometer or a magnifying lens. A transparent baseplate with graduated markings makes working with the map much easier.