File:AmCyc Boring - drill bit - twisted gimlet.jpg

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AmCyc_Boring_-_drill_bit_-_twisted_gimlet.jpg ‎(60 × 568 pixels, file size: 12 KB, MIME type: image/jpeg)

Description
English: Woodcut/drawing of a drill bit for wood in the form of a screw: the twisted gimlet, made of a conical shaft, around which is cut a half-round spiral groove
Date published 1879
Source The American Cyclopædia, v. 3, 1879, p. 99 (Fig. 13).
Author Unknown authorUnknown author
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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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Date/TimeThumbnailDimensionsUserComment
current17:27, 25 March 2014Thumbnail for version as of 17:27, 25 March 201460 × 568 (12 KB)Library Guy{{Information |Description ={{en|1=Woodcut/drawing of a drill bit for wood in the form of a screw: the twisted gimlet, made of a conical shaft, around which is cut a half-round spiral groove}} |Source =''The American Cyclopædia'', v. 3, 187...

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