Temporary Adjustments of Total station
Adjustments which required to be made at every instrument station before making any observation. It can be done through following three procedures,
1.Centering the Total station over the station.
2.Levelling the Total station.
3.Elimination of parallax.
1.Centering the Total station over the station.
This include the Centering of the Total station over the ground mark and also approximate levelling with the help of Tripod legs. While centering, it is necessary to ensure the approximate levelness; otherwise the centering will be disturbed when subsequent Levelling of the instrument is done. It can be done either using a plum-bob or laser plummet.
2. Levelling the Total station
