An Invisible Beam Laser Level is used to determine an elevation from a known Datum Point. An Invisible Beam Laser Level is a handy tool used often by formworkers and concretors to set concrete heights, bolt heights, reinforcement steel heights, and excavation depths.

Tip: Always calculate an elevation from an official Datum Point or RL (Reduced Level), not from some part of a building or structure which is “supposed” to be at a particular elevation.