Civil Engineering :: Surveying
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The direction of steepest slope on a contour, is
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Back bearing of a line is equal to
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In an internal focusing telescope
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The longitudinal section of the surface of bubble tube is
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Imaginary line passing through points having equal magnetic declination is termed as
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In case of reduction of levels by the height of instrument method,
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A theodolite is said to be in perfect adjustment if
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While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates
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The main plate of a transit is divided into 1080 equal divisions. 60 divisions of the vernier coincide exactly with 59 divisions of the main plate. The transit can read angles accurate upto
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Pick up the correct statement from the following :
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A.
the lines of sight while observing back sight and fore sight lie in the same horizontal plane |
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B.
the staff readings are measurements made vertically downwards from a horizontal plane |
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C.
the horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis |
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D.
all the above. |