A spirit level, also known as a bubble level or simply a level, is a tool used to determine whether a surface or object is horizontal (level) or vertical (plumb). It consists of a long, rectangular body with a transparent tube or vial filled with liquid, usually containing a bubble. The bubble inside the vial moves when the level is not positioned evenly, indicating whether the surface is level or plumb.
To use a spirit level:
Choose the Right Level: Select a spirit level appropriate for the task at hand. Spirit levels come in various lengths, ranging from a few inches to several feet, to accommodate different project sizes.
Place the Level:
Position the level on the surface or object you want to check. Ensure that the level is long enough to span the area you need to assess. For horizontal leveling, place the level parallel to the surface you want to check. For vertical leveling, place the level perpendicular to the surface.
Check the Bubble:
Look at the bubble inside the vial. If the bubble is centered between the reference lines or marks on the vial, it indicates that the surface or object is level or plumb. If the bubble is off-center, adjust the position of the surface or object until the bubble is centered.
Make Adjustments:
If the surface or object is not level or plumb, you may need to make adjustments. This could involve adding or removing material, using shims, or altering the position of the object until the bubble is centered.
Recheck and Repeat:
After making adjustments, recheck the level with the spirit level to ensure that the surface or object is now level or plumb. Repeat the process until the desired levelness or plumbness is achieved.
Spirit levels are commonly used in construction, carpentry, masonry, and other tasks where accurate leveling is essential. They are available in different types, including standard spirit levels, torpedo levels (with a smaller size for tight spaces), and digital levels (with a digital display for precise measurements).
You can find spirit levels at hardware stores, home improvement centers, online retailers, and specialized tool suppliers. Choose a reputable brand and ensure the level is calibrated and in good condition for accurate results.