Optical leveling

What is an optical level? This is a special device used by surveyors in the leveling process to identify the height difference of several points on the earth's surface. In other words, it allows you to measure the excess on the surface. Such a tool will be useful in landscape design, construction, pipe laying, etc. For optical levels, the GOST 10528-90 standard has been developed, which specifies information about the devices, the main parameters and types, the technical requirements and test methods. This standard replaced the outdated GOST 10528-76.