31. Curve which consists of two arcs of different circles of same or different radi, but having on opposite sides of the curve called the curves of . . . . . . . .
32. Intermediate points on main chain lines to obtain across to the interior details are known as . . . . . . . .
33. The theodolites Use for precise work are . . . . . . . .
34. This facilitates the reading of angles in prismatic compass . . . . . . . .
35. Permissable errors in surface, under ground, precise and trigonometric levelling respectively.
36. Most precise and modern EDM instrument called . . . . . . . .
37. The provision of contours and spot levels as the satutory plans is a measure to determine.
38. The forward bearing of a line is 240°. The backward bearing of the line is . . . . . . . .
39. The distance measured parallel to the line perpendicular to the meridian called
40. The ordinate joining the mid point of the curve and long chord called . . . . . . . .
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