Types of spirit level:
Box Section Levels are hugely popular and a wide range of traditional spirit level design, suitable for most applications. Including Bridged levels, Extending Levels, Masons Levels, these have a plastic shield to protect the level against hits with a trowel, and magnetic levels such as the FatMax Extreme Magnetic Level
Girder Levels (also known as I beam) are more robust and are more suited to heavy-duty use.
Electronic (or digital) Levels combine a spirit level with vials, along with a digital screen to measure and display angles. These levels allow setting of a ‘false zero’ to allow marking out falls, such as in plumbing applications. They are also ideal for repetitive tasks.
Line, Pocket & Post Levels - A pocket level is the most simple type of level. It consists of just one vial, and is compact in size for easy storage and transportation. A line level is similar in size to a pocket level, but is fitted with a hook at either end to attach to a taught cord to ensure that a levelling line is truly horizontal. Post levels are ideal to ensure fence posts are upright prior to fixing. Other uses include plumbing pipes, levelling of RSJs and other applications where both a vertical and horizontal is needed.
Torpedo, Scaffold & Boat levels are much smaller levels than box section or girder levels making these ideal for light DIY use but especially suitable for scaffolders, pipe fitters and steel erectors where the traditional longer levels are more difficult to work with. Many have bevelled shape which makes then suitable for working in cramped spaces.
Water Levels such as the utilise the principle that water will always find its own level. They are very accurate instruments which are used widely throughout the construction and building industries. A water level is the ideal tool for accurate unsighted room to room measurement or distant levelling, when using a spirit level would be ineffective.
Angle Levels such as Box Spirit Levels are a versatile measuring instrument, which combine the functions of both a spirit level and protractor. The levels allow precise measurement and marking out of angles.