Image:DATAR trackball.jpg

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DATAR_trackball.jpg‎ (400 × 290 pixels, file size: 33 KB, MIME type: image/jpeg)

This work is copyrighted and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content#Images or Wikipedia:Non-free content#Audio clips. However, it is believed that the use of this work in the articles "DATAR", "Mouse (computing)", "Five-pin bowling" and "Trackball":

To illustrate the subject in question
Where no free equivalent is available or could be created that would adequately give the same information
On the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation ([1]),

qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights.

To the uploader: this tag is not a sufficient claim of fair use. You must also include the source of the work, all available copyright information, and a detailed non-free use rationale.

Fair use, only known image of first trackball used in the Royal Canadian Navy's DATAR system. Image of low quality. Iconic photo, would not find non-copyrighted equivalent.

Is claimed as fair use as:

Is a historically significant photo of an important invention, the first trackball.
Is of low resolution and low quality.
Adds significantly to the articles.
No free equivalent available.

File history

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

	Date/Time	Dimensions	User	Comment
current	04:17, 25 April 2008	400×290 (33 KB)	Lanma726 (Talk \| contribs)	({{Non-free fair use in\|DATAR\|Trackball\|Mouse (computing)}} Fair use, only known image of first trackball used in the Royal Canadian Navy's DATAR system. Image of low quality. Iconic photo, would not find non-copyrighted equivalent. Is claimed as )