31. The true bearing of a line is 156° and magnetic bearing is 153°. The declination of place is . . . . . . . .
32. If the multiplying constant is 100, the additive constant is . . . . . . . .
33. The natural features of a country are determined by . . . . . . . .
34. The lines passing through points at which the declination is same at a given time is called . . . . . . . .
35. The point where the curve joins to forward tangent called . . . . . . . .
36. The maximum permissible angular error in seconds in a closed underground traverse of 16 stations measured with a 20 seconds theodolite is
37. In weissbach triangle method of correlation the number of shafts used for correlation are
38. Main advantage of annallatic lens by its introduction the calculation of distance and height is made . . . . . . . .
39. A corss staff is used for the purpose of . . . . . . . .
40. Trunion axis must be perpendicular to . . . . . . . .
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