Planimeter
A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape. == Construction == There are several kinds of planimeters, but all operate in a similar way.
A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape. == Construction == There are several kinds of planimeters, but all operate in a similar way.
A planimeter, also known as a platometer, is a measuring instrument used to determine the area of an arbitrary two-dimensional shape. == Construction == There are several kinds of planimeters, but all operate in a similar way.
Source: Wikipedia "Planimeter" · CC BY-SA 4.0
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