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mapping out the bottom.

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mapping out the bottom.

Time: October 7, 2017 from 6pm to 7pm
Location: anhui,hefei
Event Type: birthday
Organized By: wangqing
Latest Activity: Oct 7, 2017

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Event Description

You probably knew that surveyors often have the important tasks of defining exactly where land boundaries should be set, but you might not have known that this type of surveying is known as cadastral surveying. Determining who owns a specific piece of land or where a city or country’s boundary exists has been a hugely important task since the earliest civilizations existed.

The surveyors of today use a device called a theodolite to help them make precise calculations. This device has been used for hundreds of areas and is important because it measures angles in both the horizontal and vertical plane. Today’s theodolites look different than those invented long ago Jason Zucker Jersey , but the theory is the same. Before there were theodolites, other instruments were used including a surveyor’s compass and many types of levels. Ancient Egyptians used everything from ropes to plum bobs to gromas to help establish boundaries and to help with construction tasks such as the building of the Great Pyramids.

Setting up boundaries and producing accurate maps of the land and sea are just part of the job of a surveyor. Surveyors also have to work under the surface to create underground surveys and oceanographic surveys. There are many reasons for this, and surveyors have been needed for many centuries to help with the mining of coal, as well as to help drill for oil and natural gas.

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