These professional, robust box spirit levels are made from aluminium and feature three vials. They have a milled face on the underside, ensuring maximum flatness and high accuracy. The levels are equipped with a 180 domed/arc center vial and two 90 vials. The vials are UV and shock-resistant, and the embossed rubber end caps reduce impact when the level is dropped. Convenient hang holes are available at both ends for easy storage. The accuracy is 0.5mm in a standard working position.