The STABILA® 48-Inch Heavy-Duty Level Type 196 comes with locked-in vials that never need calibration. It's made from strong aluminum and features a reinforced, ribbed design for extra durability. This box-frame level has two vertical vials to find plumb and one horizontal vial for determining level. A unique design makes the vials readable from multiple angles, which helps when you're working in confined spaces. This Stabila level has rubberized hand grips for ergonomic comfort. A hanging hole lets you set it up on a nail while you keep both hands free to work on other aspects of your project. Rubber end caps grip the wall and prevent damage from dropping or impacting the level.