Patent for a new and improved clinometer. This design "is to provide a simple and inexpensive device for taking measurements in prismoidal formula and to avoid the calculation of the triangle and enable the slope to be readily written from the instrument" (lines 16-21). It "compris[es] the square composed of the stationary short bar or arm and the stationary long bar or arm rigidly secured to one side of the short arm or bar and provided on its face with a spirit-level and having a scale of graduations of which the length of the short bar or arm is the unit, the curved brace connecting the said parts" (lines 60-68).