Detail plotting by resection method.

Accurate centering in plane table survey is necessary for:
The three point problem fails when station lies on
It is necessary to go to one of the plotted stations in the method of resection by:
Lehmann's rule states that while looking towards the station, the plane table location to be fixed is always to the
Which type of plane table have a proper leveling head of 3 foot screws for accurate leveling of table?