Compass (magnetic compass) is a basic navigation device that uses the earth’s magnetic poles to point a magnetized needle towards the north pole. A compass works because the earth’s rotation (and some theories add that the molten lava in the Earth’s crust) create 2 magnetic poles that allow a magnet (the compass needle) to be […]
Map Reading – What are true north, magnetic north and grid north
If this is the first time you are joining the Map Reading series, you should start from the first post. This time we are touching a slightly more complicated and technical subject: true north vs grid north vs magnetic north. The very fact that we have three different Norths is a hint to the problem […]