Laser levels project rotating laser beams horizontally or at grades for elevation reference. Typical accuracy ranges from 0.125 inches per 100 feet (1/8 inch). These are common for concrete flatwork, drainage grading, and excavation control. Typical rental costs range from $30-$80 per day. Laser receivers (detectors) mounted on grading staffs locate the laser beam for elevation readings. Modern laser levels include slope capabilities for drainage work. Range typically extends 300-500 feet depending on ambient light conditions. Common applications include concrete slabs, sidewalks, and utility trenching. Laser levels are more economical than total stations for simple grading work. Battery-powered operation provides portability.