The angle between two plane mirrors of optical square is ............

While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its t…

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

In direct method of contouring, the process of locating or identifying points lying on a contour is called ............

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

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

Direct method of contouring is ............

In leveling, the correction for curvature (in meters) is equal ............

An open cross-staff is commonly used for setting out ............