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Q1: Permanent adjustments of a level are

A 2 in number

B 3 in number

C 4 in number

D 6 in number

ANS:A - 2 in number

The two adjustments are.

1) To make the axis of the bubble tube perpendicular to the vertical axis.

2) To make the line of collimation parallel to the axis of the bubble tube. It should be 6.

* Plate level test.
* Cross hair ring.
* Bubble tube adjustment.
* Collimation in azimuth.
* Spire test.
* Vertical arc.



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