Volume of the earth work may be calculated by ............

The method of finding out the difference in elevation between two points for eliminating the effect of curvature and ref…

In survey it was recorded that ΣRise = 0, then ............

When the cross-hairs are not clearly visible ............

If D is the degree of the curve of radius R, the exact length of its specified chord, is ............

For the revision of an existing survey with the help of plane table we generally use ............

The following sights are taken on the turning point ............

The "fix" of a plane table from three known points, is good, if ............

The horizontal glass in an optical square is ............