File:Photos-reveal-unsuspecting-facts 1931.pdf

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Revision as of 16:47, 14 December 2009 by Marosell (talk | contribs) ("...In spite of all the misery caused by razor blades so dull that they nearly pull the hairs out by roots, it is only now that a Washington expert, as a result of an investigation undertaken for Popular Science Monthly, is able to reveal, in a marvelous )
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Photos-reveal-unsuspecting-facts_1931.pdf(file size: 7.94 MB, MIME type: application/pdf)

"...In spite of all the misery caused by razor blades so dull that they nearly pull the hairs out by roots, it is only now that a Washington expert, as a result of an investigation undertaken for Popular Science Monthly, is able to reveal, in a marvelous series of photomicrographs, just what a razor edge actually looks like when it is sharp, or dull, and what stropping actually does to the cutting edge..."

Popular Science Monthly, October, 1931

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current16:47, 14 December 2009 (7.94 MB)Marosell (talk | contribs)"...In spite of all the misery caused by razor blades so dull that they nearly pull the hairs out by roots, it is only now that a Washington expert, as a result of an investigation undertaken for Popular Science Monthly, is able to reveal, in a marvelous
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