Relatively late in its history of making and selling slide rules, the Eugene Dietzgen Co. of Chicago began developing products that competed with the high-end slide rule lines manufactured by Keuffel ...

In the grand scheme of things, it really wasn’t all that long ago that a slide rule was part of an engineer’s every day equipment. Long before electronic calculators came along, a couple of sticks of ...

Ever wanted to know how engineers made their calculations before digital calculators were on every workbench? [Richard Carpenter] and [Robert Wolf] have just the thing—a sliderule simulator that can ...