Contact lens lathe.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...lens_lathe.jpg
0:43 video:
https://www.youtube.com/watch?v=wtysjpl3s5I
0:56 video:
https://www.youtube.com/watch?v=ggbDIgklXVM
