We know that Charles Babbage designed the first Turing-complete mechanical machine - the Analytical Engine - in the 1800s, but it was never actually built (not yet anyway).In recent history, at least one mechanical Turing machine has been built.  (This example is in fact a Universal Turing Machine, albeit with finite storage space.) But was this the first one, or are there earlier examples?What was the first mechanical Turing-complete machine constructed, who built it and when?Edit: By mechanical, I mean no electronics are used.
What was the first mechanical Turing-complete machine ever constructed?
history;computer architecture;turing completeness