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Fun Facts About Surveying: Theodolites nike air max 2017 grigie , Famous Surveyors & More Fun Facts About Surveying: Theodolites, Famous Surveyors & More September 17, 2015 | Author: Carey
Bourdier | Posted in Education
There have been surveyors around almost as long as people have been on the planet. While the early surveyors who helped construct Stonehenge and other
ancient artifacts might not have had formal schooling, their skills helped build
monuments that stood for thousands of years. In ancient Egypt and Rome,
surveying was a revered profession and these individuals help build roads and
buildings and even the Pyramids.


Surveyors use a variety of tools, including clinometers or inclinometers nike air max 2017 flyknit scontate , compasses and GPS. One of the most common tools used by surveyors is the theodolite, an optical instrument which measures angles
in the vertical and horizontal plane. The first theodolites date back to the
early 16th century and perhaps the most famous theodolites were the Ramsden
theodolites, which were used to create detailed surveys of Great Britain as well
as India.


Theodolites are still quite similar to the ones used hundreds of years ago, although today’s optical instruments tend to be even more accurate. A total
station is special device that has improved on the traditional theodolite and is
quite popular with professional surveyors. This device is an optical instrument
that not only includes a transit theodolite, it also contains an EDM or
electronic distance meter and it records measurements for the surveyor.


Some of the world’s greatest historical figures have worked as surveyors. In the United States, this includes George Washington nike air max 2017 donna scontate , Thomas Jefferson and Abraham Lincoln. However, Meriwether Lewis and William Clark are perhaps the most famous American
surveyors. Benjamin Banneker is another notable surveyor. Banneker, the son of
freed slaves, was an autodidact who eventually worked with team that surveyed
the original borders of the District of Columbia.


Surveyors around the world can join in on the fun of International Surveyors Week, which is set annually in June. The highlight of the week is Survey Earth
in Day, which also is known as SEAID. During this event nike air max 2017 bianche scontate , thousands of surveyors collect GPS data from known survey markers near their residence and share it with other surveyors. Any
professional surveyor can use a GPS, total station or theodolite and get in on
this event. During the most recent SEIAD event, more than 2,000 surveyors sent
in data.


One fun activity that quite a few surveyors enjoy is geocaching, which isn’t actually surveying, but rather locating hidden caches using a GPS receiver. You
can look for these fun hidden items or you also might consider hunting down some
of the survey markers around the United States that the National Geodetic Survey
has put in place. These markers are all over the country nike air max 2017 bianche , on the tops of mountains, in cities and in many other locations. Unlike regular surveying, where you might need a total station or a
theodolite and tripod, you just need a GPS receiver for these activities.


Carey Bourdier loves blogging about precision scientific instruments. For more information about surveying products like a surveyor compass, or to find
other alignment instruments, visit the Warren Knight site today.


BEIJING nike air max 2017 azzurre blu , Sept. 5 (Xinhua) -- China said on Tuesday it welcomes Switzerland to play a mediator role in resolving the Korean Peninsula nuclear
issue.


Swiss President Doris Leuthard said on Monday that the neutral country is prepared to act as mediator to help resolve the Korean Peninsula nuclear issue,
including by hosting ministerial talks.


Chinese Foreign Ministry spokesperson Geng Shuang said at a daily press briefing that China has noticed the statement made by Switzerland.


"China welcomes and encourages all ideas and suggestions that are conducive to easing tensions and confrontation, boosting mutual trust, restarting dialogue
at an early date and resolving the Korean Peninsula nuclear issue," said Geng.


"We also welcome countries to play a constructive role in resolving the issue," he said.


Geng said the mainstream opinion of the international community is for the Korean Peninsula nuclear issue to be resolved via dialogue and negotiation in a
peaceful way.


"We hope relevant parties can heed the rational voices of the international community and keep calm nike air max 2017 arancio scontate , rather than be provocative and fan the flames," he said.


"Military actions are not an effective choice and sanctions are not the fundamental way out for the Korean Peninsula nuclear issue," Geng added.


The DPRK launched its sixth and largest nuclear test on Sunday in violation of UN Security Council resolutions, which has been widely condemned by the
international community.


WASHINGTON, Nov. 24 (Xinhua) -- The U.S. economy grew 2.1 percent in the third quarter, according to the second estimate data released by the Commerce
Department Tuesday.


It was well over the advance estimate of 1.5 percent in economic growth for the same period.


The increase in real gross domestic product (GDP) in the third quarter primarily reflected positive contributions from personal consumption
expenditures nike air max 2017 arancio , nonresidential fixed investment, state and local government spending, residential fixed investment and exports, the department
said.


Consumer spending, which accounts for about 70 percent of the U.S. economy, rose 3 percent nike air max 2017 saldi online , compared with the 3.6-percent growth in the second quarter.


Exports increased 0.9 percent, higher than a growth of 5.1 percent in the second quarter. Fixed investment was up 3.4 percent, compared with an increase
of 5.2 percent in the second quarter.


Although the economy posted slower expansion, analysts said it is a reasonable slowdown from a brisk growth of 3.9 percent in the second quarter,
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