A laser level is an electronic tool for surveying and construction that is used to determine leveling in a horizontal as well as a vertical laser plane when mounted on a tripod. The laser beam is projected from a rotating head with a mirror to sweep the beam in a vertical axis. If the mirror is not self-leveling, the instrument usually has adjustable screws to orient the projector.

For its application, the operator carries a baton (staff) that is equipped with a movable sensor that can detect the laser beam and give a signal (normally through sound, although there are also some with a screen to generate a visual signal) when the sensor is in line with the beam. The position of the sensor on the graduated pole allows comparison of elevations between different points on the ground.

Another type is the tower-mounted laser used in combination with a sensor mounted on the wheel of a tractor for the process of leveling land to almost a plane (for example for agricultural uses) with only a brief inclination for drainage. The laser level was invented by Steve Orosz. US Patent. 5836081.

Convert a point to a line using a lens. This type of level does not require a large engine to create the illusion of a line with a dot.

There are many different types of laser levels, each of which offers us certain advantages for certain functions, the most common of which are:

Self-leveling laser level

Self-leveling levels are the type of laser level with an automatic leveling function, which makes leveling easier and tells us that it is well leveled.

Line laser level

Line laser levels are the type of laser level that project lines of laser light, a type that is ideal for vertical and horizontal alignment.

Widely used for tiling and indoor installations.

Dot laser level

Point laser levels are the levels that mark the level and lead points.

They are a fairly basic type that is used indoors, but when marking only the point they are usually very precise.

Rotating laser level

Rotating laser levels are those that have a rotating head with a diode that transmits laser light.

They are the most common for outdoors and allow us to determine levels and calculate slopes.

Surface laser level

Surface laser levels are the type designed to check the levelness of surfaces such as floors or pavements.