File:Spiral-screwdriver.jpg
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![File:Spiral-screwdriver.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Spiral-screwdriver.jpg/800px-Spiral-screwdriver.jpg)
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Summary
DescriptionSpiral-screwdriver.jpg |
English: push drill, one of the very few mechanisms that use a screw in the "backwards" sense, to convert linear motion to rotational motion. It has helical screw threads with a very large pitch along the central shaft. When the handle is pushed down, the shaft slides into pawls in the tubular stem, turning the bit. Most screws are "self locking" and axial force on the shaft will not turn the screw. |
Date | 19 May 2007 (original upload date) |
Source |
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Author | Billbeee at English Wikipedia |
Licensing
Billbeee at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
Attribution: Billbeee at English Wikipedia | ||
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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This file is licensed under the Creative Commons Attribution 2.5 Generic license.
Attribution: Billbeee at English Wikipedia
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Original upload log
The original description page was here. All following user names refer to en.wikipedia.
- 2007-05-19 21:25 Billbeee 1088×118× (113120 bytes) Photograph by Bill Bradley. ~~~~ Feel free to use it, just credit me as the photographer. You can contact me through my website [http://www.builderbill-diy-help.com/ my website] == Licensing == {{self|GFDL-no-disclaimers|cc-by-2.5}}
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19 May 2007
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 06:35, 23 February 2012 | ![]() | 1,088 × 118 (110 KB) | 老陳 |
File usage
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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Camera manufacturer | EASTMAN KODAK COMPANY |
---|---|
Camera model | KODAK Z700 ZOOM DIGITAL CAMERA |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.8 |
ISO speed rating | 100 |
Date and time of data generation | 06:58, 20 May 2007 |
Lens focal length | 6 mm |
Orientation | Normal |
Horizontal resolution | 230 dpi |
Vertical resolution | 230 dpi |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 06:58, 20 May 2007 |
Meaning of each component |
|
Shutter speed | 5 |
APEX aperture | 3 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Exposure index | 100 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 35 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
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