Archeological artifact precision drawing instrument

摘要

The instrument has a tube fixed to a mobile foot and a bar, which is vertically aligned by pen points and a plumb line. A pencil lead is pushed through the tube to fix characteristic points of the object to be drawn. The thickness of the lead can be adjusted by a plastic tube insert. A suitable base board has magnetic holders and templates for the objects. The instrument has a magnification lens for drawing details and very small artifacts. The instrument can be combined with a computer.