Plane Table Survey, Advantage & Disadvantage of plane table survey.

 Advantages of Plane Table Survey:-

1. The plan is drawn by the out door surveyor himself while the country is before his eyes, and therefore, there is no possibility of omitting the necessary measurements.
2. The surveyor can compare plotted work with the actual features of the area.
3. Since the area is in view, contour and irregular objects may be represented accurately.
4.   Direct measurements may be almost entirely dispensed with, as the linear and angular dimensions are both to be obtained by graphical means.
5. Notes of measurements are seldom required and the possibility of mistakes in booking is eliminated.
6. It is particularly useful in magnetic areas where compass may not be used.
7. It is simple and hence cheaper than the theodolite or any other type of survey.
8. It is most suitable for small scale maps.
9. No great skill is required to produce a satisfactory map and the work may be entrusted to a subordinate.

Dis-Advantage of Plane Table Survey:-

1. Since notes of measurements are not recorded ,it is a great inconvenience if the map is required to be reproduced to some different scale .
2. The plane tabling is not intended for very accurate work.
3. It is the essentially a tropical instrument
4. It  is most inconvenient in rainy season and in wet climate.
5. Due to heavyness, it is inconvenient to transport.
6. Since there are so many accessories, there is every likelihood of these being lost.