# 7. Measurement

Once the orthomosaic images are generated, the user can use them in data or image processing. The area covered by the entire orthomosaic image is of great concern. These images are generated after the images are captured by the drones. The actual area on the land and the area of the image should not deviate. The user can verify it from the feature called 'Measurement' in DroneNaksha.

For using this facility, DroneNaksha gives us various tools such as:

* Polygon
* Polyline
* Marker

These tools are available on the right drawer on the screen.


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