The Kapro 440 line level is designed for making straight long line pulls as well as finding height differences over long distances. The line level is hung on the line wire using its two oppositely directed hanging hooks. This way, you can check the straightness of the line and indirectly also possible height differences between attachment points. Easy to read Oppositely directed attachment hooks that prevent the level from falling Extremely lightweight and handy For buildings, tiling, and landscaping