We've already seen a number of different images featuring the Sentinels in X-Men: Days of Future Past, including a full-scale photo that director Bryan Singer debuted earlier this month. The official http://twitter.com/xmenmovies/Twitter feed for this highly-anticipated sequel offers a blueprint image of a Sentinel's head, which includes technical jargon beyond our understanding. As you can see at the bottom of this image, these mutant-hunting robots are made by Trask Industries, which is lead by Bolivar Trask (Peter Dinklage) in the movie. Take a look at the photo, and stay tuned for more images as X-Men: Days of Future Past continues shooting in Montreal.

X-Men: Days of Future Past Sentinel Blueprint
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"Enjoy this exclusive look at our revolutionary Sentinel technology. #XMen #DOFP #DaysofFuturePast pic.twitter.com/Y0zo09x1Vc"