screw up your courage, my good friend, and resolve to show the world that you are an honest man....
"A Budget of Paradoxes, Volume II (of II)"
Augustus de Morgan
screw threads are designated by their pitch or the distance between the threads.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
screw-cutting lathe with independent feed.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose