published on: 2012-11-26 17:18:42
lokaikever.tumblr.com/post/36512532250/
theomeganerd: Portal Gun Schematic Posters by TheDailyRobot
lokaikever.tumblr.com/post/36610940983/
lokaikever.tumblr.com/post/36611692264/
reblogued and edited from http://a-f-r-a-i-d.tumblr.com/
lokaikever.tumblr.com/post/36612237530/