The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as

A line which joins subsidiary stations on the main lines of a chain survey network and serves to facilitate taking offse…

In a survey it was recorded that Σ Rise = 0, then

Determining the difference in elevation between two points on the surface of the earth is known as,

The lines of force of earth's magnetic field are parallel to the earth's surface

The method of surveying in which field work and plotting work are done simultaneously, is called

The total change in level along the line is equal to total back sights

The first reading from a level station is

An imaginary line joining the points of equal elevation on the surface of the earth represents