Surveying
In the cross-section method of indirect contouring, the spacing of cross-sections depends uponi) contour intervalii) scale of planiii) characteristics of groundThe correct answer is

(i), (ii) and (iii)
(ii) and (iii)
only (i)
(i) and (ii)

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Surveying
The length of a chain is measured from

centre of one handle to centre of other handle
outside of one handle to outside of other handle
inside of one handle to inside of other handle
outside of one handle to inside of other handle

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