Originally Posted by M ELEY
...For future historians who are interested in this thread, I wanted to attach 3 such sites with info...
Even not aspiring to be an historian, this material is always precious for one's general culture.
But i also enjoy it in that, being you defending the thesis that barshot shaft cross section is not only square but also round, you are now to deal with it also ... hexagonal
... If you don't mind my (Latin) humour