In reciprocal leveling, the error which is not completely eliminated, is due to ............

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

Left swing is not much favoured in theodolite survey because ............

In an adjusted level, when the bubble is central, the axis of the bubble tube becomes parallel to ............

A plain scale is used to read ............

The method of measuring distance by pacing is chiefly used in ............

The latitude and departure of a traverse line are both positive when the whole circle bearing of the line lies in the ..…

The radius of curvature of the bubble tube is generally kept ............

Correction for curvature for a distance of 1 km = ............