IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This German-made fixed-arm polar ...
This German-made fixed-arm polar planimeter has a 4-1/2" metal and bronzed brass tracer arm and an 8" bronzed brass pole arm welded to a cylindrical weight. A carriage on the tracer arm has a white ...
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