These are images from my 2010 travels I've converted with this command:
for i in *.jpg; do convert "$i" "`basename "$i" .jpg`.png" && autotrace -despeckle-level 15 -color-count 6 -input-format PNG -output-file "`basename "$i" .jpg`".svg -output-format svg "`basename "$i" .jpg`.png"; done
profiles (outlines) of some subset of the plastic gear wheels available in Lego Technic contruction sets. Can be used for design of models or illustration of gears. Contains no logos.
Free vector gear and cogwheel 2D & 3D vector graphics pack for your abstract art, industrial components, clockwork, car machinery, manufacture, factory equipment, mechanism illustration, metal wheel, technology, transmission, vehicle, engineering, construction or steel industry themes.
"System" icon from http://tango.freedesktop.org/Tango_Desktop_Project
Since version 0.8.90 Tango Project icons are Public Domain: http://tango.freedesktop.org/Frequently_Asked_Questions#Terms_of_Use.3F