Guys,
Such tools are really quite easy to use. Unlike the modern dies, with this tool you do not start the thread at the end of the blank shaft. If you wish to thread the last 1/2 inch of a lock side screw, you start the thread 1/2 inch from the end and work the thread towards the end. There is very little overturning moment of bending involved, so the brass handle on the end of the arm is a good idea. When we use one of these old tools the response is often - "Wow, this is so easy". This one is a beautiful tool!
Jim