Decades have passed since the pocket calculator relegated the trusty slide rule to near obscurity. Now, an exhibit celebrates the lengthy history of the device, featuring the slide rules of ...

Before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer. Our new series, Tools of the Trade, begins with a look at the 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 9-1/2 inch paper linear slide ...