This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Redrawn to SVG format. The original can be viewed here: Red cylinder.png: . Modifications made by Pbroks13.
The copyright holder of this file allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted.
Attribution
Original upload log
This image is a derivative work of the following images: