Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Polar
Coradi Polar Planimeter
Coradi
Switzerland
German silver and brass
1919
N/A
General area measurement

Notes: "This planimeter was made by G. Coradi in Zurich, Switzerland, and sold through Lowman & Hanford Co. in Seattle to the State of Washington. The calibration table in the box is dated 1919. All the calibrations are related to inch measurements, so this planimeter was made for the American market. The Coradi serial number is 27865."


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