Surveying
The type of surveying which requires least office work is

tacheomefry
theodolite surveying
plane table surveying
trigonometrical levelling

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Surveying
Which of the following errors can be eliminated by taking mean of bot face observations ?

error due to imperfect adjustment of plate levels
error due to line of collimation not being perpendicular to horizontal axis
error due to eccentricity of verniers
error due to imperfect graduations

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Surveying
Bowditch rule is applied to

an open traverse for graphical adjustment
determine the effect of local attraction
None of these
a closed traverse for adjustment of closing error

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