Spirit Level 201

A **Spirit Level 201** is a precision tool used to determine the horizontal or vertical alignment of surfaces. It typically features a **sturdy body** made from aluminum or plastic and contains **one or more bubble vials** filled with liquid and an air bubble. The **bubble vial** helps users check if a surface is level by aligning the bubble between marked lines. The **201 model** may refer to a specific size or design variation, commonly used in **construction, carpentry, and DIY projects** for accurate leveling.