The primary objective of this tacheometric surveying is to prepare contoured maps or plans requiring both the horizontal as well as vertical control. On surveys of higher accuracy, it provides a check on distances measured with the tape.

What is purpose of Tacheometry?

A tachymeter or tacheometer is a type of theodolite used for rapid measurements and determines, electronically or electro-optically, the distance to target.

In which situation Tacheometry is used?

Definition of Tacheometry:

Thus it is best suited when obstacles such as steep and broken ground, deep ravines, stretches of water or swamps are met with Tacheometry is mainly used while preparing contour plans and traversing and is also suitable for hydrographic surveys, location surveys of roads, railways, etc.