WOW, an actual real post on the front page. Bravo, I applaud you. I love museums. They are always so calming and you always get to find new and interesting stuff that you never knew before. My father in law here in the states works in a government facility that builds parts for some jet engines that i would assume are simular to the one in this post. It is crazy how exact all the tollerances have to be on those parts. we are talking down to the hundered thousanth on some parts. A human hairs width diffrence would be to much runout and cause catostrophic damage. Thanks for sharing.