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Keuffel & Esser N4053-5 Polyphase Mannheim Simplex Slide Rule

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 20-inch mahogany one-sided slide ...
insider.si.edu

Gilson Midget Circular Slide Rule

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 two-sided circular slide rule is ...