E.O. RICHTER & CO Drawing tool set in a rectangular case made of hard black plastic. Inside the lower part of the case there is a wooden layer with recesses suitable for the tools to be placed in them, the entire inside case is wrapped with a red felt layer. The case contains various drawing tools, the drawing is done using a graph or ink and some are done by engraving. The thickness of the drawing lines is determined using the wheels that change the size of the key for inserting material or drawing tools. In some tools, the drawing accessory can be changed from graph to ink or to an engraving piece. Made in Germany