The angle of intersection of a counter and a ridge line, is ............

If a 30 m chain diverges through a perpendicular distance from its correct alignment, the error in length is ...........…

The contour interval depends upon the ............

The perpendicular offset from a tangent to the junction of transition curve and circular curve is equal to ............

For a transit theodolite the least reading on the main scale is 20'. If its vernier scale should read 20", then ........…

Local attraction at a place may be due to ............

The principle of tacheometry is used ............

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

The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's ............