Image: Trackman marble wheel
Size of this preview: 800 × 533 pixels. Other resolutions: 320 × 213 pixels | 3,072 × 2,048 pixels.
Original image (3,072 × 2,048 pixels, file size: 1.54 MB, MIME type: image/jpeg)
Description: a person using a Logitech Trackman Marble wheel trackball
Title: Trackman marble wheel
Credit: Own work
Author: Brad Kennedy
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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