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The solar compass is a precision surveying instrument that makes use of the sun's direction that allows surveyors to determine the true north direction by reference to the sun. Sun compass was first invented and patented by William Austin Burt on February 25, 1836.
Do you know how compasses work if they are placed on ships or planes where there is a lot of metal? Do you know what is boxing the compass? Do you think that a compass points to a geographic pole? Read interesting facts about compass.
Compasses can be divided on those that direct to the magnetic poles of Earth and those that direct to true poles of Earth. There are also compasses that are used professional, amateur and even religious purposes. Read more about types of compasses.
A magnetometer is a device that measures magnetism. Magnetometers can accurate measure magnetization, strength and direction of the magnetic field around them. The first magnetometer was introduced by Carl Friedrich Gauss in 1833. They are today used in an incredible variety of devices, including mobile phones.