A spirit level (or bubble level) is used to test whether a surface, or anything you are constructing or installing, is completely horizontal or vertical. When putting up shelving, tiling a wall or erecting a fence, you need to make sure you are working in a straight line. If you don’t, the money you’ve invested in your lovely new living room sofas and dining room furniture will be wasted as guests spend all of their time at your humble abode talking about the uneven and tilted nature of your room!
When bricklaying, you can ensure your bricks are of an even level. Hold the spirit level against the front of all of the bricks. If all of them touch the spirit level, then you know they are level.
It is usually made from aluminium containing a glass tube or several vials filled with a liquid spirit. There is a bubble in the tube which moves towards the centre of the tube when it is placed on a flat surface. If the bubble moves to rest between two lines drawn across the centre of the tube, then this means it is lying completely flat. Longer spirit levels are always going to provide a more accurate reading.
The spirit level is a useful tool which is incredibly easy to use and well worth investing in. To use, hold the spirit level up against the surface you are using or whatever it is you are installing. If you are holding the spirit level straight, the bubble will come to rest in between the two lines drawn across the centre.
After taking that reading, turn the level around the opposite way and take the reading again. It should read exactly the same as before.