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A solar compass uses the sun as a navigational tool. The most common method is to use a compass card and the angle of the shadow of the sun to indicate direction. The school compasses (models 550 50, 550 55, 550 60, 559 WP 00) in our product range are specifically designed for younger children. These extra-safe precision compasses have a blunt safety needle to prevent injury. The main use for compasses were out at sea, as there are no landmarks to help with navigation. Sailors used to use the stars, in particular Polaris, the North star, to help find their way. Though sometimes the sky could be cloudy or stormy, and they wouldn’t be able to tell which way they were heading. This is why compasses are particularly important at sea.
Who could forget the compass that’s used in mathematics? A handy tool that helps to aid with drawing circles and other geometric shapes as well as finding mid-points to help solve problems. Not related to Earth’s magnetic field but still a compass worth mentioning. Compasses-and-straightedge constructions are used to illustrate principles of plane geometry. Although a real pair of compasses is used to draft visible illustrations, the ideal compass used in proofs is an abstract creator of perfect circles. The most rigorous definition of this abstract tool is the "collapsing compass"; having drawn a circle from a given point with a given radius, it disappears; it cannot simply be moved to another point and used to draw another circle of equal radius (unlike a real pair of compasses). Euclid showed in his second proposition (Book I of the Elements) that such a collapsing compass could be used to transfer a distance, proving that a collapsing compass could do anything a real compass can do. Magnetic compasses are the most well known type of compass. They have become so popular that the term “compass” almost always refers a magnetic compass. While the design and construction of this type of compass has changed significantly over the centuries, the concept of how it works has remained the same. Magnetic compasses consist of a magnetized needle that is allowed to rotate so it lines up with Earth's magnetic field. The ends point to what are known as magnetic north and magnetic south.Scientists and historians don’t know when the principles behind magnetic compasses were discovered. Ancient Greeks understood magnetism. As early as 2,000 years ago, Chinese scientists may have known that rubbing an iron bar (such as a needle) with a naturally occurring magnet, called a lodestone, would temporarily magnetize the needle so that it would point north and south. The resource gives children a map of a general school with areas included like the staff room, main hall, field and several classrooms. The children can use the compass to work out and practise directional language, including North-west, south-east, to get to their destinations. A lovely and memorable way for children to get confident using directions.
Case with hinged lid containing 1 precision compass with lead part, universal adapter and spares boxThere is a type of compass which does always point to the True North as it uses the Earth’s rotation, rather than its magnetic field. This is known as a gyroscope, and it was invented in 1906 by Hermann Anschütz-Kaempfe, and is usually used by large ships and aircraft. It follows the Earth’s axis or rotation to find True North.
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