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Question
The instrument used for accurate centering in plane table survey is
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A.
Spirit level
B.
Alidade
C.
Plumbing fork
D.
Trough compass
Answer ( Option C)

Plumbing fork

Solution

A plumbing fork is a hairpin-shaped brass frame made of arms of equal length. A plumbing fork with a plumb bob attached to one end is used for centering the plane table at a particular station.

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