Q. What is used in centering aid in theodolites, compass, plane table and variety of other surveying instruments?

(A) butt rod
(B) whites
(C) laths
(D) plumb bob

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✅ Correct Answer: (D) plumb bob

Explanation: plumb bob transfers points to the ground so it is used for centering. butt are used for measuring offsets.

Published by Mr. Dubey ⭐ 104.84K Points at 21-Sep-2023 06:50 pm in Metrology and Measurements

Explanation by: Mr. Dubey

plumb bob transfers points to the ground so it is used for centering. butt are used for measuring offsets.

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