IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Mathematical instruments have long ...

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 white plastic circular rule has ...

While some (math-phobics) still may relish the simple beauty and non-threatening functionality of the abacus, there are those who have made the transition to more challenging computing gadgets—many ...

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 ...

MESSRS. JOHN DAVIS AND SON, of Derby, the A well known instrument makers, are bringing out a variation of the slide rule which is likely to. increase its value for certain classes of calculation ...

Unless you are above a certain age, the only time you may have seen a slide rule (or a slip stick, as we sometimes called them) is in the movies. You might have missed it, but slide rules show up in ...

Less than a year ago we told you about the Tiroler, a titanium ring that's a rather clever alternative to the boring ol' tape measure. Well, its makers are back with a new take on the concept, which ...

Mid-wavelength infrared (MWIR) is a unique regime with various potential applications in fingerprint detections. Besides, it is also one of three atmospheric transmission windows which shows many ...

THE author makes his title, “Quick and Easy Methods of Calculating”—at least, that is all that is in large print on the title-page; but the binder calls it, on the outside of the book, “The Slide-Rule ...