DWL80PRO is a mini pocket digital level that allows for easy, clear and precise digital display of any angles in degrees or % of slope. This model has accuracy of 0.05 degrees at 0° and 90° and 0.2 degrees at all other angles. With a magnetic base, the DWL80G can easily attach to metal surfaces. The hold function freezes the reading on the LCD. This unit has longer than average battery life and an automatic 3 mins off feature. The strong impact resistance ABS polymer material casing is molded with a tough aluminum base with built in vials.