File:AmCyc Boring - drill bit - single-lip auger.jpg
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AmCyc_Boring_-_drill_bit_-_single-lip_auger.jpg (73 × 574 pixels, file size: 15 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:20, 25 March 2014 | ![]() | 73 × 574 (15 KB) | Library Guy | {{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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