Secure Tools supplies Spirit levels. They are instruments used to determine if a surface or object is horizontally level (parallel to the ground) or vertically plumb (perpendicular to the ground). They are widely used in construction, carpentry, masonry, and other industries where accurate leveling is essential. Spirit levels typically consist of a rectangular or tubular body filled with a liquid, such as alcohol or oil, and an enclosed bubble. Spirit levels are essential tools for ensuring accuracy and proper alignment in a wide range of projects. They enable builders, carpenters, and DIY enthusiasts to achieve level surfaces, straight lines, and plumb angles.