US Patent 7340841 Slope level

A slope level for measuring the slope of a surface is provided. The slope level includes a body having a front face and a back face and defining a first planar measurement surface. A transparent arced tube is disposed on the body. The arced tube has a first end and a second end and defines a pinnacle point between the first end and the second end. The arced tube defines an inner space having a slope indicator disposed therein. The slope indicator is movable within the inner space. A template is positioned proximal to the arced tube. The template includes measurement indicia disposed thereon to indicate the measurement of the slope based on the position of the slope indicator within the inner space of the arced tube.