It enables its user to travel to the past or to the future.
Real Life CounterpartEdit
Sci-fi writer H.G. Wells once wrote a book called The Time Machine. In this universe, an unnamed scientist manages to travel, albeit by accident, to a time where humanity lacks both curiosity and technology.
- As the Library has a policy against time travel (it can damage reality itself), H.G Wells' machine was probably dismantled beyond use.