Then again, Babbage's Analytical Engine was the epitome of mechanical calculation (had it been realized).
It may be someday.
It already has been:-
Based on Babbage's original plans, the London Science Museum constructed a working Difference Engine No. 2 from 1989 to 1991, under Doron Swade, the then Curator of Computing. This was to celebrate the 200th anniversary of Babbage's birth.