The smaller horizontal angle between the true meridian and a survey line, is known ............

The method generally preferred to for contouring an undulating area, is ............

In tangential tacheometry, an ordinary level staff is used ............

Sensitiveness of a level tube depends upon ............

An imaginary line lying throughout on the surface of the earth and preserving a constant inclination to the horizontal, …

The instrument, belonging to a class of reflecting instrument is ............

A disadvantage of plane table survey is ............

The chord of a curve less than peg interval, is known as ............

A contour map of the area is essential before proceeding with the construction of ............