The General Tool scribe I think you are speaking of is pretty versatile. I was impressed it scribed right thru hot rolled mill scale on structural stuff.
They probably should give you a few extra points, I broke one trying to use it as an awl and loosen up a bolt that was twisted off. I think if you cleaned it all with brake cleaner, put a dab of RTV inside the collet, and let it cure the point would probably take pliers and a slide hammer to remove.
Funny story about those General Tool scribers - I had a top loading washing machine where the transmission was a known offender across this product line and mine stopped working. After researching the internet I jumped to the same conclusion and ordered up a new transmission, puffing out my chest at the savings I was getting in not having to spend for a new machine (and probably a set to keep them matched lol). While disassembling 90% of the parts in the entire unit to change that out, I discovered the actual root cause - the external collet "nut" apparently detached from the scriber body in the wash, exited thru the perforated holes in the inner tub, and extremely efficiently jammed the inner tub to a stop against the outer tub. I had so much apart at that point, the transmission was a known weak point so I just powered thru, cursing under my breath the rest of the way. Fun times
