published on: 2012-11-26 21:00:45
theomeganerd: Portal Gun Schematic Posters by TheDailyRobot
lokaikever.tumblr.com/post/36598469117/
lokaikever.tumblr.com/post/36611692264/
reblogued and edited from http://a-f-r-a-i-d.tumblr.com/
lokaikever.tumblr.com/post/36612237530/
lokaikever.tumblr.com/post/36612435796/