Optical Level

Optical levels are common instruments used primarily for surveying, tools that can generally be seen in use in fields or on the sides of roads. Some advanced and more costly instruments, like Transit Levels, Theodolite Levels or Laser Levels, are able to perform more tasks than ordinary or basic Optical Levels. Available in a variety of forms, they all serve the same key purpose: to help construction professionals measure land elevations.
The standard optical level (also referred to as a builder’s level) features a telescope that enables a surveyor or builder to make an actual measurement. As a result, they are more valuable and are far more prevalent at construction sites.