This is a Vintage Archimedes Screw type Hand Drill, approx length over all is 9 3/4". These drills accepted small drill bits, and is operated by sliding the bobbin up and down the twisted steel shaft thus causing the rotation. The chuck is brass with the bobbin and end being wood, the whole tool has a lovely patina and would be an excellent addition to a vintage tool set or display, alternatively can be used as an unusual ornament. There is age and use related marks and some pitting on the steel but overall is in nice condition. I cannot date this one accurately but in my experience will easily be pre 1950's.