Self-leveling: Set it and Forget it! Utilizes gravity to constantly self-level, guaranteeing accuracy: (1/8" @ 100' radius)(3mm @ 30m). Eliminates set-up time typical of manually levelled units. Eliminates jobsite issues such as vibration, accidental contact and temperature fluctuation. Out-of-level sensor Flashes laser beam, alerting user if unit is out of level for any reason. Eliminates status checks and costly errors. Exclusive, precision, diamond cut, single piece beam splitter Eliminates beam offset. All beams originate from the same origin. Maximizes accuracy and perpendicularity. Attaches anywhere and to anything with attachment accessory (Included)