Empire em81 Series True Blue Torpedo Level, 9" Long, Aluminum, Tri-Vial: * Get the level best: True Blue vials provide spot-on construction-grade accuracy, superior readability as well as never-fade, -fog or -leak durability * Tri-axis design enables easy level, plumb and 45 degree angle readings * Convenient top-mounted window allows you to check the level vial"s bubble from a second vantage point * Heavy-duty aluminum frame ensures absolute structural integrity * Level Type: Torpedo * Leveling Axis: 45 degrees * Horizontal/Vertical