The technique of plotting all the accessible stations with a single set up of plane table is called ............

The process of turning the telescope about the vertical axis in horizontal plane is known as ............

For accurate work, the steel band should always be used in preference to chain because the steel band ............

Diaphragm of a surveying telescope is held inside ............

The rise and fall method of reduction of levels, provides a check on ............

While plane tabling in plane and open area, the most important operation for setting up the plane table is ............

In locating the details of inaccessible objects visible at least from transit stations, the method used is ............

The projection of a traverse line on a line parallel to the meridian is known as ......... of the line.

The contour interval is kept inversely proportional to ............