While I think it's safe to assume that most on HN know who Alan Turing is and what he did, I think it's fine to have an article about this in general. But this actual article is of pretty poor quality and doesn't really contain any technical information. Sure, it's nice that a replica was built, and cool to see pics, but if that's the story then please make the headline match it better.

Wikipedia's article on the Bombe is much more interesting: http://en.wikipedia.org/wiki/Bombe