Professional self-leveling cross-line laser features vertical, horizontal and cross-line modes and can project two lines independently or together for a broad array of alignment and leveling applications. One-button operation easily selects among horizontal, vertical, and cross-line modes. Smart pendulum system self-levels and indicates out-of-level condition to help ensure an accurate layout. It locks the pendulum after the laser is switched off for secure transport. Manual Mode locks lines for use at any angle. 1/4 In. - 20 mount threading allows laser to be mounted on be wall or tripod for easy set up. Includes Mounting clamp and (2) AA batteries.