File:AmCyc Boring - drill bit - single-lip auger.jpg
AmCyc_Boring_-_drill_bit_-_single-lip_auger.jpg (73 × 574 pixels, file size: 15 KB, MIME type: image/jpeg)
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DescriptionAmCyc Boring - drill bit - single-lip auger.jpg |
English: Woodcut/drawing of a drill bit for wood in the form of a screw: the single-lip auger, made of a half-round bar wound spirally around a cylinder |
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Date | published 1879 | |||||||
Source | The American Cyclopædia, v. 3, 1879, p. 99 (Fig. 12). | |||||||
Author | Unknown authorUnknown author | |||||||
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current | 17:20, 25 March 2014 | ![]() | 73 × 574 (15 KB) | Library Guy (talk | contribs) | {{Information |Description ={{en|1=Woodcut/drawing of a drill bit for wood in the form of a screw: the single-lip auger, made of a half-round bar wound spirally around a cylinder}} |Source =''The American Cyclopædia'', v. 3, 1879, p. 99 (Fi... |
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