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

Prismatic compass is considered more accurate than a surveyor's compass, because ............

The additive constant for the tacheometer is ............

Centering error of a theodolite produces an error ............

The adjustable cross-staff is used for setting out an offset ............

A staff reading taken on a point whose elevation is to be determined as on a change point is called ............

q1 and q2 are the angles of elevation from A to the top and bottom of vertically held rod of length S at B. The horizont…

Under ordinary conditions, the precision of a theodolite traverse is affected by ............

Two contour lines, having the same may cross each other only in the case of ............