An automatic level is a surveying instrument used to establish horizontal planes. It consists of a telescope mounted on a leveling base that automatically adjusts itself to provide accurate readings. Surveyors use it to measure distances and elevations, ensuring construction projects are level and properly aligned. These instruments are commonly used in construction, civil engineering, and land surveying. The automatic level simplifies the leveling process, making it faster and more efficient than traditional methods. By using a staff or rod, surveyors can easily read measurements from a distance, enhancing productivity on job sites.