Explain the procedure adopted with micro optic theodolite to find reduced level.

Explain the procedure adopted with micro optic theodolite to find reduced level.
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1 Answer

Answer :

Procedure adopted with micro optic theodolite to find reduced level:

1) Take out micro optic theodolite from its box and fix it on the tripod over the required station.

2) Carryout the approximate leveling by leg adjustment and centering by judgement.

3) Accurate centering with help of optical plulmmet.

4) Levelling is done with help of foot screws and plate level.

5) Focussing and sighting by using ring on the eye piece to get clear image of cross hair and focusing sleeve on telescope to get clear image of the object.

6) Open the illumination mirror and turn it towards the light to get the circle evenly illuminated.

7) Setting initial vertial angle zero-zero by using vertital circle drive, for keeping the line of collimation perfectly horizontal.

8) Reduced level of any point is find out by the usual procedure. i.e. taking first staff reading on bench mark and then on each other required points.

9) Readings are recorded in field book.

10) RLs can be obtained by line of collimation method or Rise and fall method.
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