Write short note on spire test of theodolite

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written 7.2 years ago by

teamques10 ★ 70k

Condition- To make the horizontal axis perpendicular to vertical axis.

Necessity- By mean of the 2nd and 3rd adjustment, we ensure that line of sight will revolve in vertical plane. The adjustment become essential in all work necessitating motion of the telescope in altitude.

Spire test-

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