A long time ago I got a hold of an old hand crank Mimeograph machine that I cleaned up and got in working order. I even found some stencils and ink and a few tools for making stencils. The machine has been long gone for several decades but I still have a stylus I had purchased for creating rules and drawings. I have been using it as a scoring tool and no longer as the tool it was intended to be.
My Sure Rite No. 14-1301 Mimeograph Tool. It is 6 3/8 inches long. I use it now only as a scoring tool when folding paper.
The steel tip is very sturdy and strong with a very small ball end.