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Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Square Root
Bailey Meter Co. Square Root Planimeter with Three Cams
Bailey Meter Co.
ca. 1930
Determining fluid flow from circular pressure diagrams

Notes: "This planimeter would have been used much like a radial planimeter on a circular chart, but the chart would be pressure measurements from a pitot tube in a pipe carrying, probably, water. The three interchangeable cams adjust the square root function of the planimeter for different types of charts."

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