These aluminum I-beam spirit levels feature three vials: a 180 Degree vial and two 90 Degree vials. It has easy-to-read graduation marks on the top side, starting from zero cm in the middle and extending both left and right. The vials are UV and shock-resistant, while the rubber end caps provide added protection if the level is dropped. There are hang holes at both ends for easy storage. The accuracy is 0.5mm in a standard working position.
