The distance between steps for measuring downhill to obtain better accuracy ............

The permissible error in chaining for measurement with chain on rough or hilly ground is ............

The adjustment of horizontal cross hair is required particularly when the instrument is used for ............

Under ordinary conditions, the precision of a theodolite traverse is affected by ............

The horizontal distance between any two consecutive contours is called ............

The contour interval is kept inversely proportional to ............

The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresp…

In leveling operation ............

The Simpson's rule of areas assumes that the portions of the boundary between the ends of ordinates are ............