Line Ranger Instrument in Surveying

Line Ranger Instrument in Surveying

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Line Ranger is an optical instrument used in surveying for ranging. It is used in the process of locating intermediate points in a straight line between two endpoints of the survey line.

 

The working mechanism of Line Ranger in Surveying

Line Ranger is a lightweight instrument consisting of two right-angled isosceles prisms(plane mirrors) placed one above the another and one sight vane such that surveyor can see the image formed on the prism.

Upper prism is movable and can be adjusted while the lower prism is fixed. Diagonals of the prism are silver coated such that they reflect incident ray.

 

Use

It is mostly used in direct ranging. 

 

Advantage

It eliminates the requirement of two persons in ranging. (A single person can easily perform ranging work with this instrument.)

 

Read More: Pegs in Surveying

Read More: Arrows in Surveying

 

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