Automatic Optical Level

An Automatic Optical Level, also known as an automatic level or dumpy level, is a surveying instrument used to measure and establish horizontal levels. It is commonly used in construction, engineering, and land surveying projects.

Automatic optical levels are equipped with a built-in compensator that automatically levels the instrument. This compensator ensures that the line of sight remains horizontal, even if the instrument is not perfectly level. This feature makes the instrument easier to use and reduces errors in measurements.

The instrument consists of a telescope mounted on a tripod. The telescope is equipped with a horizontal circle that allows for precise angle measurements. It also has a leveling bubble that helps in ensuring the instrument is properly leveled.

To use an automatic optical level, the instrument is set up on a tripod and leveled using the leveling bubble. The telescope is then pointed at a target or benchmark, and the horizontal angle and vertical height are measured. These measurements can be used to determine elevations, establish reference points, and create accurate topographic maps.

Automatic optical levels are commonly used in construction projects to establish level reference points for grading, excavation, and building foundations. They are also used in land surveying to measure elevations, establish control points, and create contour maps.

Overall, automatic optical levels are essential tools in the field of surveying and construction, providing accurate and reliable measurements for various applications.