Compass is a simple instrument but that doesn’t mean that it could not be improved. And people did just that. In time, compasses were lumps of ore, works of art and precise technological marvels that changed the world around us.
As simple of an instrument as it is, there was always place for an improvement of a compass. First compasses used natural material as it could be found in the Nature, but today we have technology that can make compasses into a precise instruments that they should be.
Compass is simple to use but if a more precise measuring is needed its use can be more complicated because Earth’s magnetic field is not of uniform direction in every part of the world.