Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB ............

Normal tension is that pull which ............

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

The method of leveling in which the heights of mountains are found by observing the temperature at which water boils is …

The first reading from a level station is ............

For the revision of an existing survey with the help of plane table we generally use ............

The length of chain is measured from ............

The difference between the sum of the angles of a spherical triangle on the earth's surface and the angles of the corres…

If the angle between index glass and horizon glasses of a box sextant is 40° the horizontal angle between A and B sight …