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- Tool that employs bubble vials positioned in the center and both ends to check vertical and horizontal surfaces for level or plumb.
- Made of either hardwood with brass binding, metal (aluminum, magnesium) or high-impact plastic.
- Typically 24" to 48" long, but some models (generally mason’s levels) are longer and can be up to 72” in length.
- Some models include split level or graduated vials that have two sets of lines, with the outside line representing a 2 percent grade that conforms to the slope required for gutters and waste lines to drain properly.
- Some models include electronic features to calculate angles on sloped surfaces (roof pitches, stair slopes and drainage angles) and display reading in degrees, percent slope or inches per feet (rise/run).
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