Plane table surveying is the method of surveying in which fieldwork and plotting work are done simultaneously, and do not require any office work. Plane tabling is generally adapted for surveys that do not require high precision. It is mainly employed for small-scale or medium-sized mapping.
In the case of survey of plane tables, the geometric positions of the site are manuscripts in a map sheet using plane tables and the topographic details are then arranged on the map. Airplane table surveying is one of the fastest and easiest methods of surveying. Plotting of plans and field observations can be done at the same time in a plane table survey.
It is useful for the following cases:
1. It is best for small scale survey ie any type of fields
2. It is also used in surveying industrial areas where compass fails to perform survey
3. It is often used to fill details between stations determined by the triangulation method or theodolite traversing method.
Generally there are four methods are available to perform plane table surveying. They are: