A leveling technique generally achieves this relative elevation of points on the ground as a reference datum. In most cases, it is an independent procedure that uses to fix the plan metric coordinates.
The process of leveling involves measuring a vertical distance on a horizontal line of sight. As a result, the vertical measurements can take with a graduated staff. The horizontal measurements can take with an instrument that will provide a line of sight.
Some Key Terms in Leveling
Level Surface
The level surface is set perpendicular to the direction of gravity at each point and corresponds to a curved surface. An accurate level surface, for example, is still water. Moreover, level surfaces are those analogous to the spherical surface of the earth’s core.
Level Line
Whenever a line crosses a level surface at a particular point it is said to be tangential. In other words, the plumb line is normal at every point.
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