I don't know about drill rods specifically but many fascinating "curiosities" reside in the Flinders Petrie Museum, London, including evidence of rotating disc stone cutting in ancient Egypt. Such images are difficult to find.
As to the Nag Hammadi 'Library', one doesn't need to read a whole lot of it to see why it is not included in the Bible; endless passages about archons and Gnostic intellectual ideas. The scripts are generally dated to the mid 2nd Century or later; many scholars believe that they are based upon earlier manuscripts but the evidence is thin.