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File:AmCyc Boring - drill bit - American auger.jpg

AmCyc_Boring_-_drill_bit_-_American_auger.jpg ‎(90 × 563 pixels, file size: 18 KB, MIME type: image/jpeg)

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Description
English: Woodcut/drawing of a drill bit for wood in the form of a screw: the American auger, made of a solid shaft, around which is a thin helical fin. It much resembles a wood screw; the cutting edge is removable, and resembles that of a centre bit.
Date published 1879
Source The American Cyclopædia, v. 3, 1879, p. 99 (Fig. 16).
Author Unknown authorUnknown author
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current17:49, 25 March 2014Thumbnail for version as of 17:49, 25 March 201490 × 563 (18 KB)Library Guy (talk | contribs){{Information |Description ={{en|1=Woodcut/drawing of a drill bit for wood in the form of a screw: the American auger, made of a solid shaft, around which is a thin helical fin. It much resembles a wood screw; the cutting edge is removable, and res...

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