how a brunton compass works.
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So they make a variety of compasses, with different features. Fundamentally all compasses work the same. The needle aligns with the earth’s geomagnetic field to indicate North/South.
Some common additional features include
sighting bars to ensure you’re accurately sighting straight to a landmark
Mirrors to ensure that you’re keeping previously passed landmarks behind you while you walk a line. (Ie: walking straight)
Lines to orient with a map
Rulers for working with maps both normal and scaled
There can be many more specialized features added if desired but may not be useful to everyone.
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