dosh8er writes "This is pretty cool. Other than the reels, lamp, and lens, Friedemann Wachsmuth built this fascinating (and useful) contraption from what appears to be common parts Lego Technic parts." Link to Original Source
I cannot conceive that anybody will require multiplications at the rate
of 40,000 or even 4,000 per hour ...
-- F. H. Wales (1936)