If the lower clamp screw is tightened and upper clamp screw is loosened, the the

Question

If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated

Options:

A . on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

B . on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate

C . on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

D . on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

Answer: Option C

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