The Faithfull Water levels utilise the principle that water will always find its own level. They are very accurate instruments that are used widely throughout the construction and building industries. Easy to set up while speedy and simple to use, they are designed for single-handed use when simultaneously measuring equal heights at two distant points. 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. Other applications include working on wall tiling, guttering, landscaping, patios, driveways, fencing and drainage projects. This low-cost water level is accurate to 1mm at 10 metres. Virtually unbreakable graduated tubes and vent caps. Tube Length 10m (33ft)