Last month I had an opportunity to visit the Gutenberg Museum in Mainz, and one of the display cases concerning book production before Gutenberg's printing press contained a reproduction of some medieval spectacles. Photography was not permitted, so this picture is of realy medieval specs on display in the Museum of London. We now know that sight-corrective eyewear was in common use much earlier than the historic record suggests. At has to be admitted that we have today achieved a better level of comfort and convenience than our forebears enjoyed: what a ridge in the nose these contraptions must have made!
Getting back to Gutenberg and his printing press, the Museum was very empty when I visited so I was lucky enough to get a turn printing a page of St John's gospel on his very machine. So exciting! The machine actually started out life as a wine press, which Gutenberg adapted to the purpose. An incredibly heavy contraption to turn- his assistants must have been a brawny bunch.