Helix Oxford Metal Compass & Pencil, Black

Product Information

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. Many compasses have a smaller scale inside the compass housing to make this easier, or use the outer scale. Most compasses only show a marker for every 2 degrees. Inspired by an antique trammel set found at a woodworking show, the VERITAS version is made of stainless steel for durability and corrosion resistance, and has knurled sections to make the tips easier to remove.

Very early compasses were made of a magnetized needle attached to a piece of wood or cork that floated freely in a dish of water. As the needle would settle, the marked end would point toward magnetic north. Which end of a magnet will the north pole of a compass point towards when it lines up with the magnetic field? Perhaps after this lesson the children will be able to use what they have learned and go on scavenger hunts or orienteering activities. The needle point is located on the steady leg, and serves as the center point of the circle that is about to be drawn.If you’re unsure about using a compass the best thing to do is get the map of an area you know really well, where you wouldn’t usually need a map to get around. Take yourself off for a walk, using the map and a compass to navigate your way as you reach each turning. This way you shouldn’t get lost and you can compare that the direction you think you should be travelling in matches what the compass is telling you! One of the most important features of a permanent magnet, whatever shape it is, is that it has two different ends. These ends are called poles . There is a north (N) pole and a south (S) pole. Transpose the direction of travel onto your map. Place your map on a horizontal surface, then place the compass on the map so that the orienting arrow points to true north on the map. If you know your current position on the map, slide your compass around so that its edge passes through your current position, but its orienting arrow continues to point north. [8] X Trustworthy Source U.S. Geological Survey U.S. government agency responsible for conducting scientific research on the nation's land, natural resources, and natural disasters Go to source The earliest compass use recorded comes from the Chinese Han Dynasty and Tang Dynasty, around 200 BC. They discovered that some metal from the ground was naturally magnetic and so were able to use these metals, known as lodestone, or magnetite, to magnetise iron needles in the first types of compass. Understand the basic layout of the compass. While the designs of compasses are different, all compasses include a magnetized needle that orients itself to the magnetic fields in the Earth. The basic field compass, also sometimes called a baseplate compass, features the following simple components you should familiarize yourself with as soon as possible: [1] X Research source

As a symbol [ edit ] A computer drawn compass, used to symbolize precise designing of applications.A micrometer – Used to give an extremely precise measurement. Can be used like a more accurate version of an outside callipers and gives an accurate measurement of outside edges of material. Learn to take a bearing from the map. To find out which direction you need to travel to get somewhere, place the map on a horizontal surface and place your compass on the map. Using the edge of the compass as a ruler, place it so that it creates a line between your current position and where you intend to go. Japanese Splitting Gauge Centre Punches Drive Pin Punches Rampins Pencils, Carpenter Pencils, Marker Incra-Rules Drafting tools Aluminium Rulers Calipers Large vernier calipers Scriber Gauges Protractors Micrometer Feeler Gauge Thread gauges Taper Gauge Diameter and Radius Gage Straight Edges Cutting Rules Thermometer, Hygrometer Inspection Magnifiers Combination Squares Dividers Distances can be measured on a map using compasses with two spikes, also called a dividing compass (or just "dividers"). The hinge is set in such a way that the distance between the spikes on the map represents a certain distance in reality, and by measuring how many times the compasses fit between two points on the map the distance between those points can be calculated. These greatly helped early sailors during their sea voyages to see where they were going. You can also find compasses with roses that have 16 or even 32 points. These include directions such as North-northwest, east-northeast, south-southwest.

The adjustment varies across the country and you can generally find it printed on your map in the key. Look for 'magnetic north'. Ignore any references to 'true north' as we don't need them. At the moment GB magnetic variations are between -1° and 4°. Our STAEDTLER compasses are also available in a plastic case with a hinged lid. Depending on the model, this includes a lead box with four HB leads as well as practical accessories for school and professional use:Magnetic compasses come in many forms. The most basic are portable compasses for use on casual hikes. Magnetic compasses can have additional features, such as magnifiers for use with maps, a prism or a mirror that allows you to see the landscape as you follow the compass reading, or markings in Braille for the visually impaired. The most complicated compasses are complex devices on ships or planes that can calculate and adjust for motion, variation, and deviation.

The biggest errors by beginners here are firstly moving the bezel - it's set and should not be changed at this point. Secondly, not holding the compass pointing directly away from the body. Also, be aware of any magnets or metal near the compass: mobile phones, magnetic buttons, metal belts and similar can 'deflect' the compass needle, making it inaccurate. Top tips for beginners The degree dial is the twistable dial surrounding the compass housing that displays all 360 degrees of the circle. During the 12th century, Europeans created the compass rose. It enabled the creation of the eight principal winds, which includes the four cardinal directions (North, South, East, West) plus the new intercardinal directions; North-East, South-East, South-West, North-West. These dividers have a spring attached and allow fast and easy fine-adjustment with their screw. For marking or copying measurement of items. Available in two different sizes.Earth’s magnetic field protects us from charged particles thrown out from the Sun. As these particles come close to Earth, Earth’s magnetic field deflects them.