Plane Table Surveying - Instruments and accessories, Method of setting up, Advantages & Disadvantages, Procedure
What is Plane Table Surveying? Plane table surveying is a method of surveying that involves observing and recording the horizontal and vertical positions of objects from a fixed point (the plane table) using an alidade (a straight edge with sights or a telescope). The surveyor places the plane table at a point of interest and levels it using a spirit level. The alidade is then used to sight various features on the ground, and the surveyor notes the angles and distances to each feature on a sheet of paper attached to the table. These measurements are then used to create a map or plan of the surveyed area. Plane table surveying is often used in areas where traditional surveying equipment may not be practical or accurate enough. Instruments and accessories used in Plane Table Surveying: - Plane table surveying 1. Plane Table: A table that is levelled and used as a base for surveying. The plane Table is made of well-seasoned good quality teak or pine wood and is available in different siz