If the angle between index glass and horizon glasses of a box sextant is 40° the horizontal angle between A and B sight by it is ............

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

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

"Cross-section" and "Longitudinal sectioning" is ............

In route surveys, the most suitable method of contouring is ............

Survey plotting can be done with an accuracy of ............

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

Let the angular value of one graduation of a tube of length x be \theta seconds and R be the radius of its internal curv…

For true difference in elevations between two points A and B, the level must be set up ............