
Spirit Level
A spirit level, also known as a bubble level or simply a level, is a tool used in construction, carpentry, and other related fields to determine whether a surface is horizontal (level) or vertical (plumb). It typically consists of a rectangular or cylindrical body with a transparent tube filled with liquid. Inside the tube, there is a bubble, and the goal is to center this bubble between two marked lines or within a central vial. When the bubble is centered, the surface is considered level or plumb, providing a visual reference for ensuring accuracy in various construction and alignment tasks.