Navigation equipment

Navigation equipment

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Credit: STEVE PERCIVAL/SCIENCE PHOTO LIBRARY

Caption: Navigation equipment. Global positioning system (GPS) receiver (lower right), compass (lower left) and dividers (top) on a map. The GPS receiver uses signals from the GPS satellites to calculate local latitude and longitude and height above sea level. When travelling, the changing position can be used to indicate the direction and distance of travel. Before GPS technology was available, a compass was used to find North. The magnetized compass needle swings freely to point north-south at the northern magnetic pole. The end of the needle marked in red is the north-pointing end. The set of dividers is adjusted to span the distance between two points on the map, allowing calculations of distances.

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Keywords: altitude, cartographical, cartography, communication, communications, compass, device, devices, direction, distance, dividers, electronic, electronics, equipment, geographical, geography, global positioning system, gps, handheld, handset, instrument, instruments, latitude, longitude, magnetic, map, measurement, measuring, navigation, orienteering, portable, reading, receiver, satellite, space, technological, technology, telecommunication, telecommunications

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