To orient a plane table at a point with two inaccessible points, the method generally adopted, is ............

Can the vertical axis coincide with any other axis in any position of telescope?

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

If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remain within 1° stadia system …

Substense bar is an instrument used for ............

A tape of length l and weight W kg/m is suspended at its ends with a pull of p kg, the sag correction is ............

Then the position of a point is to be located accurately by a perpendicular offset, the direction of perpendicular is se…

Prolongation of chain line across an obstruction chain surveying, is done by ............

In precision theodolite traverse for roads and railways, the angular error of closure should not exceed ............