Surveying
The graduations in prismatic compassi) are invertedii) are uprightiii) run clockwise having 0° at southiv) run clockwise having 0° at northThe correct answer is

(ii) and (iii)
(i) and (iii)
(ii) and (iv)
(i) and (iv)

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Surveying
The rise and fall method

is less accurate than height of instrument method
quicker and less tedious for large number of intermediate sights
provides a check on the reduction of intermediate point levels
is not suitable for levelling with tilting levels

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