insider.si.edu

Pickett & Eckel Model 2 Deci Log Log Duplex 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 10-inch duplex slide rule is ...
insider.si.edu

Keuffel & Esser 4080-3 Log Log Trig Duplex 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 ten-inch double-sided mahogany ...