Description

Level Bottle: A Simple Tool for Accurate Measurements A level bottle is a small, transparent container filled with a colored liquid, often alcohol or a mineral oil. It is used to determine whether a surface is level or plumb. How it works: The liquid inside the bottle is sensitive to changes in gravity. When the bottle is placed on a level surface, the liquid will settle in the center. If the surface is not level, the liquid will move towards the side that is lower.