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 64-page booklet was received ...

Ever wanted to know how engineers made their calculations before digital calculators were on every workbench? [Richard ...

This ten-inch, two-sided wooden slide rule is coated with white plastic and has a glass indicator with plastic and metal edges. The endpieces are L-shaped metal. The front of the base has L, LL1, DF, ...

It was the only technological tool widely and continuously used for over three centuries. For math and science geeks it was a badge of honor, nestled neatly into a plastic pocket protector along with ...