Surveyor Eedris Mairiga

14/11/2019

A prismatic compass is a navigation and surveying instrument which is extensively used to find out the bearing of the traversing and included angles between them, waypoints (an endpoint of the lcourse) and direction. [1]
Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder . [2] The compass is generally used to run a traverse line. The compass calculates bearings of lines with respect to
magnetic north. The included angles can then be calculated using suitable formulas in case of clockwise and anti-clockwise traverse respectively. For each survey line in the traverse, surveyors take two bearings that is fore bearing and back bearing which should exactly differ by 180° if local attraction is negligible. The name
Prismatic compass is given to it because it essentially consists of a prism which is used for taking observations more accurately. [3]
Least count
Least count means the minimum value that an instrument can read which is 15 minutes in case of prismatic compass. It means compass can read only those observations which are multiples of 15 minutes, 5° 25 ' , 15 ° 55 ' , 35 ° 45 ' 30 [4]
Bearings
The compass calculates the bearings in whole circle bearing system which determines the angle which the survey line makes with the magnetic north in the clockwise direction. The included angles can be calculated by the formulas F-P ±180 in case of anti-clocwise traverse and P-F ±180 in case of clockwise traverse, where 'F' is the fore bearing of forward line in the direction of survey work and 'P' is the fore bearing of previous line. [5]
Parts
The essential parts of the prismatic compass are listed below:-
Magnetic needle
Eye vane
Eye slit
Eye hole
Mirror (adjustable)
Glass cover
Graduated ring
Lifting lever
Lifting pin
Metal box (85–100 mm dia)
Focussing stud
Object vane
Sun glasses
Sliding arrangement.

24/09/2019

In today’s data-driven society, in which location-based services have become an omnipresent part of everyday life, there is no doubt that surveying is all around us. But did you also know that surveyors have been indispensable to the development of the world since civilization began? [https://www.gim-international.com/content/article/the-surveyors-of-our-world](https://www.gim-international.com/content/article/the-surveyors-of-our-world)

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21/08/2019

Importance of GIS and Surveying Tools

Total Station
A total station is a device that utilises the technology of an electronic theodolite and an electronic distance measurement (EDM), along with the use of an on-board computer, to do a lot of the heavy lifting in a surveying environment. The tool is incredibly convenient, with it encompassing a variety of different functions, and can often allow for remote use with robotic iterations.

The remote use of a robotic total station is yet another money and time-saving piece of survey equipment that is changing the way the industry works. Usually, an assistant is required on site to help take accurate measurements, which can almost double the labour cost and half the time efficiency of a job when compared to remote tools.

The on-board computer of a total station is vital to taking, calculating and storing accurate data. Partnered with the reduced need for an assistant, productivity is greatly improved. This accuracy and productivity is compounded by there not being a need for a line of sight to take measurements, which reiterates the changing nature of surveying with modern survey equipment.

Furthermore, many total stations can include image capture. This removes the need for expensive photographers and site revisits.

20/08/2019

Importance of GIS and Surveying Tools
GPS Tools
GPS is one of the most important innovations utilised by land surveyors in land measurement in the modern iteration of the industry. The time, money and annoyance saved by this is extremely important addition to survey equipment cannot be understated. Traditionally, land surveyors would have to make multiple trips to sites in order to gather all the information they needed – especially with larger sites – but GPS tools have drastically reduced this.

Since GPS uses the Earth’s satellites to bounce information back and forth, large sites can be surveyed quickly and securely. There is also little need for writing down the information gathered, as the GPS tool will usually store this internally. Surprisingly, if you speak to a land surveyor, they will tell you that one of the hardest parts of the job is keeping track of their notes – especially if the weather isn’t on their side – so the industry as a whole is very pleased with this technology.

24/06/2019

15/06/2019

We deals with any surveying activities. Be it final survey,engineering survey,map production,etc

15/06/2019