

MCQOPTIONS
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1. |
While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates |
A. | The rotation axis is vertical |
B. | The trunnion axis is horizontal |
C. | The line of collimation is perpendicular to vertical axis |
D. | None of the above |
Answer» B. The trunnion axis is horizontal | |