Which of the following is not one among the three major kinds of obstacles of chaining?

Which of the following is not one among the three major kinds of obstacles of chaining? Correct Answer obstacles to levelling

Obstacles to levelling is not a kind of obstacles to chaining. Obstacles of chaining are of three kinds. They are obstacles to ranging, obstacles to chaining, obstacles to both chaining and ranging.

Related Questions

Both ends of the line may not be visible from intermediate points on the line. This case comes under which among the three kinds of obstacles to chaining?
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