File:AmCyc Boring - drill bit - screw auger (2).jpg

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AmCyc_Boring_-_drill_bit_-_screw_auger_(2).jpg ‎(90 × 574 pixels, file size: 19 KB, MIME type: image/jpeg)

Description
English: Woodcut/drawing of a drill bit for wood in the form of a screw: the screw auger (second version), formed of a flat band of steel twisted when red hot.
Date published 1879
Source The American Cyclopædia, v. 3, 1879, p. 99 (Fig. 15).
Author Unknown authorUnknown author
Permission
(Reusing this file)
Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
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drill bit

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image/jpeg

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c756e48b1c13a2adbb10645400b3ba4c85aad529

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data size

18,978 byte

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574 pixel

width

90 pixel

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Date/TimeThumbnailDimensionsUserComment
current17:42, 25 March 2014Thumbnail for version as of 17:42, 25 March 201490 × 574 (19 KB)Library Guy{{Information |Description ={{en|1=Woodcut/drawing of a drill bit for wood in the form of a screw: the screw auger (second version), formed of a flat band of steel twisted when red hot.}} |Source =''The American Cyclopædia'', v. 3, 1879, p....

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