"Magnifying glass" Quotes from Famous Books
 ... Durham work is galvanized extra heavy, or standard wrought-iron, or steel pipe. It is almost impossible to recognize wrought-iron from steel pipe without the aid of a chemical or a magnifying glass. To test the pipe to distinguish its base, take a sharp file and file through the surface of the pipe that is to be tested. If the pipe is steel, under a magnifying glass the texture of the filed surface will appear to be smooth and have small irregular-shaped grains, and ...
— Elements of Plumbing • Samuel Dibble
... one of his leather bags there was a magnifying glass, and he assured himself that he was merely curious—most casually curious—as he hunted it out from among his belongings and scanned the almost illegible writing on the back of the cardboard mount. He made out the date quite easily now, impressed in the cardboard by the point of a pencil. It was ...
— The Courage of Marge O'Doone • James Oliver Curwood
... "A powerful magnifying glass shows that the surface of unpolished glass is formed by a layer of crystals, or of sand, with the faces projecting out in all directions and at all angles. The result is, that a beam of light from the eye strikes one or more of these faces and is diverted from a straight line ...
— The Wonder Island Boys: Exploring the Island • Roger Thompson Finlay
... proceeded to examine the two pieces of metal under a magnifying glass. Then with his geologist's hammer he broke off bits of the metal, through all of which ...
— The Pony Rider Boys in the Rockies • Frank Gee Patchin
... using millimeter paper must hold separately in his hands a magnifying glass and needle, while the engraver holds the engraving tool inclined in one hand and the magnifying glass in the other, or must work under a large lens standing on three feet, it is now possible by a firm connection between the lens and needle or other instrument to draw directly with one hand ...
— Scientific American Supplement, No. 611, September 17, 1887 • Various
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