Spirit Level
A housing with bubble vials that verifies surfaces are level (horizontal), plumb (vertical), or at a set angle.
What is it?
The spirit level uses liquid-filled vials with an air bubble to indicate whether a surface is level, plumb, or at a marked angle. Ground and true machined bases are the key to accuracy.
What is it used for?
- Checking boards and fixtures are level
- Verifying walls are plumb
- Setting angles with an adjustable vial
How to choose
Choose length to the span you check (2-4 ft common) and the number of vials. A machined, flat base and sealed vials keep it accurate and leak-free.
Anatomy
Understanding the parts of a spirit level helps you use, maintain, and buy it with confidence.
- Body: the main working portion of the tool
- Working end: the part that contacts the material
- Handle: the part you grip for control and leverage
Materials & construction
Quality spirit levels are made from hardened, heat-treated steel (often chrome-vanadium or high-carbon) chosen for strength, edge retention, and resistance to wear and corrosion.
Safety & maintenance
- Inspect the tool before use and replace any that are worn or damaged
- Use the right tool for the job and apply controlled force
- Store tools clean and dry to prevent corrosion
- Wear appropriate eye protection for the work
Also known as
bubble level, carpenters level