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 duplex aluminum linear slide ...
DE MORGAN, in article “Slide Rule” in the Penny Cyclopaedia, points out that though Gunter first used a logarithmic scale, the real inventor of the logarithmic slide was Oughtred. “In the year 1630 he ...
This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...
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