The two point problem and three point problem are methods of ............

The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corre…

Cross-staff is used for ............

The constant vertical distance between two adjacent contours, is called ............

In the surveying telescope, diaphragm is held ............

If the staff is not held vertical at a leveling station, the reduced level calculated from the observation would be ....…

The theodolite is an instrument used for measuring very accurately ............

Detailed plotting is generally done by ............

In leveling operation ............