Amsler Polar Planimeter to Find Area of Indicator Diagram
An Amsler Polar Planimeter instrument used to measure the area of an arbitrary shape. The planimeter traces the shape of the graph with respect to the origin. The wheel at the hinge shows the measurement of the area.
Keywordsmath tools, Amsler Polar Planimeter to Find Area of Indicator Diagram, Area Measurement, Instrument to find Area of Graph, planimeter, planimeters
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Derr, Louis Cyclopedia of Engineering (Chicago, IL: American Technical Society, 1911)