IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Maurice Hartung of the University of ...

Description Some engineers continued to use slide rules even when they lost their sight. This is such an instrument; it may have been adapted from Keuffel & Esser's original product by the American ...

Most people have heard of or seen slide rules, with older generations likely having used these devices in school and at their jobs. As purely analog computers these ingenious devices use ...