Wikisource

File:AmCyc Boring - Drill with prolonged cutting edge tapered to a point (1).jpg

AmCyc_Boring_-_Drill_with_prolonged_cutting_edge_tapered_to_a_point_(1).jpg ‎(160 × 261 pixels, file size: 13 KB, MIME type: image/jpeg)

Description
English: Woodcut/drawing of a drill bit with a prolonged cutting edge (ensuring a clean cut) tapered to a point (ensuring a straight hole).
Date
Source The American Cyclopædia, v. 3, 1879, p. 98 (Fig. 3).
Author Unknown authorUnknown author
Permission
(Reusing this file)
Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:AmCyc_Boring_-_Drill_with_prolonged_cutting_edge_tapered_to_a_point_(1).jpg

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

drill bit

MIME type

image/jpeg

checksum

8548c1e1a451e3f1c996c6cf2b0a0018de626e0f

determination method: SHA-1

data size

13,086 byte

height

261 pixel

width

160 pixel

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:38, 20 March 2014Thumbnail for version as of 21:38, 20 March 2014160 × 261 (13 KB)Library Guy{{Information |Description ={{en|1=Woodcut/drawing of a drill bit with a prolonged cutting edge (ensuring a clean cut) tapered to a point (ensuring a straight hole).}} |Source =''The American Cyclopædia'', v. 3, 1879, p. 98 (Fig. 3). |Autho...

The following page uses this file:

Retrieved from "https://en.wikisource.org/wiki/File:AmCyc_Boring_-_Drill_with_prolonged_cutting_edge_tapered_to_a_point_(1).jpg"