Optical levels, also known as theodolites, are specialized measuring utilities, applied to measure angles. These appliances are commonly used when surveying the area and planning a position of a structure, especially if there are geographical requirements for given structure (for example broadcasting towers). Laser levels are control devices utilized in construction or interior design. They produce a laser beam along the horizontal/vertical axis. This beam is projected on a surface, and used as a marker when digging, cutting, laying tiles, or any other possible situation. We provide a selection of measuring and controlling devices produced by the best brands.