Maurice L. Hartung, associate professor of the teaching of mathematics at the University of Chicago, wrote this sixteen-page pamphlet, How to Use Basic Slide Rules in 3 Easy Steps for Pickett & Eckel, ...

Slide rules work using the idea that adding up logarithms is the same as multiplying. For example, for a base 10 logarithm, log (10)=1, log (100)=2, and log (1000)=3.

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Some engineers continued to use slide ...