NOTE: It does not measure distance Made of heavy duty aluminum frame is lightweight, easily used in construction work and help reduce hand fatigue. Design with 180 bubble vial and one triangular bubble vial with triangular mirror are handy for horizontal, vertical or angular applicationswith quick and accurate leveling. Measurement surface with V-shaped groove for pipe measurements LED Light - Designed with 2 bubble vial LED lights for easier reading in dark workspaces. Long press the red button to turn on/off the light. Anti-shock & Magnetic - 2-in-1 laser spirit level designed with over-molded rubber end caps for non-marring leveling and shock resistance; Two milled surfaces with magnet making it easier to be attached to any iron for easy and hands-free work Application - Ideal for decoration, home furnishings, construction and related working for aligning and leveling, such as measuring locations on a wall, space between hangers, level the nails, etc.