Scroll-compressor
<a href="//commons.wikimedia.org/wiki/User:Kbentekik" title="User:Kbentekik">Kbentekik</a>
2012-05-08
<a href="//commons.wikimedia.org/wiki/File:2d_scroll-compressor.jpg" title="File:2d scroll-compressor.jpg">File:2d_scroll-compressor.jpg</a>