Empire em81 Series True Blue Magnetic I-Beam Level, 12" Long, Aluminum, Vari-Pitch: * Find True Blue reliability with advanced concentric molded (ACM) tubes, some of the most accurate leveling tubes available today * Convenient Vari-Pitch vial allows you to match sloped beams and supports * Compact tri-axis design enables easy level, plumb and 45 degree angle readings from a tool that"ll easily fit in just about any toolbox * Dual top-read windows provides a second vantage point for both the level and Vari-Pitch vial * Heavy-duty extruded-aluminum frame helps ensure perfectly square structural integrity * Magnetic base enables hands-free use on ferrous-metal materials * Level Type: Carpenter/Mason * Leveling Axis: 45 degrees * Horizontal * Variable * Vertical