This circular slide rule consists of a silver-colored metal dial, 8-1/2" wide, mounted on a silver-colored metal disc. Three oblong holes on the base disc permit the reading of trigonometric scales on ...

It's remarkable that the slide rule remained an intrinsic part of scientific and commercial undertakings for more than 200 ...

An early computing device invented by Reverend William Oughtred in London in the 17th century. Primarily for multiplication and division, the slide rule has two stationary sets and one sliding set of ...

For about 350 years, humanity’s most innovative handheld computer was something called a slide rule. As typewriters once symbolized the writer, slide rules symbolized the engineer. These analog ...

Before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer. Our new series, Tools of the Trade, begins... The Slide Rule: A Computing Device That Put A Man ...

Slide rule bezels are arguably the most underrated watch feature. Although the technology is antiquated, like most watch features, it is unique, fun to play with and a great conversation starter. The ...

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 ...

This circular slide rule consists of a silver-colored metal dial, 8-1/2" wide, mounted on a silver-colored metal disc. Three oblong holes on the base disc permit the reading of trigonometric scales on ...

We are always impressed with something so simple can actually be so complex. For example, what would you think goes into an analog computer? Of course, a “real” analog computer has opamps that can do ...