Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material
DateScale LengthArea of Use
Polar
Ott Polar Planimeter
Ott
Germany
Blackened brass and German silver
Unknown
N/A
General area measurement

Notes: "This is a fairly standard Ott polar planimeter with adjustable-length tracing arm, but with all the options. It has a magnifier (for the vernier) that slips onto the end of the pole arm, spare points for the pole weight, a checking rule, a screwdriver, and a ""foot"" next to the tracing point that rides on the drawing so you don't drag the sharp point across the paper."


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