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Created with Fabric.js 1.4.5 INFOGRAPHIC FOR SURVEYING is the art and science of measuring relative position of points above, on, or beneath the surface of the earth, as of horizontal distances, elevations, directions, and angles. Surveying?? Levelling.. Position the tripod on a stable surface Adjust the leg of tripod to suit your height & tighten the screw. How Surveying Works?? Secure the levelling machine on the tripod head Center the bubble by adjusting the footscrews to make sure the instrument is level. Make sure thestaff is vertical before taking readings Adjust for parallax. Focus on the staff by gently rotating the telescope. Aim at the instrument at staff and record the staff reading. Modern Application EDM - Electronic Distance Measurement - to determine the length of a line.- energy from an instrument at one end of a line and is transmitted to"reflector" at the other end and itreturn to originatinginstrument. GIS - Geographic Information System An organized collection of computerhardware, software, geographic datato capture, store, update, manipulate,analyze, and display all forms ofgeographically referenced information GPS - Global Positioning System A highly accurate navigationsystem using signals fromsatellites to determine a locationon the Earth's surface,irrespective of weather conditions. Low Ying Binng I14006013CVE 3223 A, Raymond S, (1992), Surveying 6th edition
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