Leveling devices are tools used to determine whether a surface is horizontal or vertical. Common types include spirit levels, which contain a liquid-filled vial with a bubble that indicates levelness, and laser levels, which project a straight line of light to help align objects accurately. These devices are essential in construction, carpentry, and various DIY projects. In addition to traditional tools, modern leveling devices may incorporate digital technology for enhanced precision. Some advanced models feature digital displays that show the exact angle of a surface, making it easier for users to achieve the desired level. These tools are valuable for ensuring accuracy in various applications.